- International families
- 25k2015 to 2024
- Leading country
- United States1.6× the next
- All families
- 155khome filings included
- Over five years
- Rising2020 to 2024 against the five before
Year by year
Patent families by country of origin and the year of the earliest filing, 2000 to 2025; 2025 is a part year, still filling in. International families are those for which protection was sought beyond one country.
Volume
International patent families in the capability, by the year of the earliest filing.
Source: Global Institute for National Capability (GINC), 2026. Underlying patents from 107 patent offices, IFI CLAIMS and Google
Share by country
Each country's share of the year's international families, in per cent: the capability's five largest countries of origin, 2015 to 2024, and the rest of the world.
Source: Global Institute for National Capability (GINC), 2026. Underlying patents from 107 patent offices, IFI CLAIMS and Google
Country leaderboard
International patent families, 2015 to 2024, by country of origin. Growth compares the latest five full years with the five before.
Ten largest
United States
China
Japan
Germany
France
South Korea
Canada
Netherlands
United Kingdom
Saudi Arabia
5,663
3,476
2,794
1,548
1,459
1,377
813
742
645
625
| 2000 to 2025 | ||||||
|---|---|---|---|---|---|---|
| 1 | United States | 5,663 | 22.7% | 1.2× | 7,644 | |
| 2 | China | 3,476 | 13.9% | 1.8× | 113,634 | |
| 3 | Japan | 2,794 | 11.2% | 1.4× | 8,391 | |
| 4 | Germany | 1,548 | 6.2% | 1.3× | 1,973 | |
| 5 | France | 1,459 | 5.9% | 1.2× | 1,712 | |
| 6 | South Korea | 1,377 | 5.5% | 1.8× | 7,001 | |
| 7 | Canada | 813 | 3.3% | 1.0× | 1,147 | |
| 8 | Netherlands | 742 | 3.0% | 0.9× | 796 | |
| 9 | United Kingdom | 645 | 2.6% | 1.5× | 767 | |
| 10 | Saudi Arabia | 625 | 2.5% | 1.2× | 817 | |
| 11 | Finland | 608 | 2.4% | 1.0× | 713 | |
| 12 | Australia | 484 | 1.9% | 1.4× | 590 | |
| 13 | Italy | 473 | 1.9% | 1.2× | 650 | |
| 14 | India | 397 | 1.6% | 1.0× | 460 | |
| 15 | Denmark | 294 | 1.2% | 1.6× | 316 | |
| 16 | Russia | 279 | 1.1% | 0.8× | 2,673 | |
| 17 | Switzerland | 268 | 1.1% | 1.3× | 304 | |
| 18 | Belgium | 250 | 1.0% | 1.2× | 293 | |
| 19 | Austria | 225 | 0.9% | 1.9× | 245 | |
| 20 | Sweden | 220 | 0.9% | 1.5× | 237 | |
| 21 | Luxembourg | 197 | 0.8% | 2.1× | 212 | |
| 22 | Brazil | 186 | 0.7% | 1.2× | 478 | |
| 23 | Norway | 164 | 0.7% | 0.9× | 183 | |
| 24 | Taiwan | 160 | 0.6% | 1.6× | 603 | |
| 25 | Spain | 155 | 0.6% | 1.3× | 200 | |
| 26 | Türkiye | 114 | 0.5% | 2.4× | 211 | |
| 27 | Singapore | 95 | 0.4% | 2.0× | 106 | |
| 28 | South Africa | 95 | 0.4% | 0.8× | 102 | |
| 29 | Mexico | 75 | 0.3% | 0.6× | 190 | |
| 30 | Israel | 73 | 0.3% | 1.1× | 86 | |
| 31 | Poland | 73 | 0.3% | 1.0× | 451 | |
| 32 | Ireland | 36 | 0.1% | 1.1× | 38 | |
| 33 | Czechia | 35 | 0.1% | 1.9× | 75 | |
| 34 | Portugal | 34 | 0.1% | 1.6× | 44 | |
| 35 | Malaysia | 32 | 0.1% | 1.0× | 59 | |
| 36 | New Zealand | 23 | 0.1% | 1.9× | 25 | |
| 37 | Hungary | 18 | 0.1% | 1.0× | 37 | |
| 38 | Hong Kong | 9 | 0.0% | 1.3× | 16 | |
| 39 | Cayman Islands | 4 | 0.0% | 0.0× | 6 | |
| 40 | Liechtenstein | 2 | 0.0% | – | 2 |
Applicants
The largest applicants by international patent families, 2015 to 2024: across the world, then within each of the five countries with the most families in Processing & Refining. Names are as held in the source and are not consolidated across subsidiaries.
Global
24,936 international families
SAUDI ARABIAN OIL CO · Saudi Arabia
ARAMCO SERVICES CO · Saudi Arabia
IFP ENERGIES NOW · France
UOP LLC · United States
JFE STEEL CORP · Japan
SABIC GLOBAL TECHNOLOGIES BV · Netherlands
643
491
486
477
411
353
United States
5,663 international families
UOP LLC
CHEVRON USA INC
EXXONMOBIL RES & ENG CO
EXXONMOBIL TECHNOLOGY & ENGINEERING COMPANY
EXXONMOBIL CHEMICAL PATENTS INC
DOW GLOBAL TECHNOLOGIES LLC
476
276
244
189
148
124
China
3,476 international families
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD
HUNAN BRUNP RECYCLING TECH CO LTD
CHINA PETROLEUM & CHEM CORP
CHINA PETROCHEMICAL TECHNOLOGY CO LTD
SINOPEC RES INST PETROLEUM
PETROCHINA CO LTD
284
284
222
109
85
82
Japan
2,794 international families
JFE STEEL CORP
SUMITOMO METAL MINING CO
NIPPON STEEL CORP
JX NIPPON MINING & METALS CORP
KOBE STEEL LTD
HONDA MOTOR CO LTD
410
240
108
82
70
59
Germany
1,548 international families
BASF SE
LINDE AG
LINDE GMBH
THYSSENKRUPP AG
THYSSENKRUPP STEEL EUROPE AG
SMS GROUP GMBH
275
71
69
55
55
49
France
1,459 international families
IFP ENERGIES NOW
TOTALENERGIES ONETECH
AIR LIQUIDE
COMMISSARIAT ENERGIE ATOMIQUE
CENTRE NAT RECH SCIENT
AXENS
484
161
126
117
84
55
Similar capabilities
The nine capabilities that share the most international patent families with Processing & Refining, 2015 to 2024: the families counted in both as a share of those counted in either. Each card shows its five largest countries.
Trade & Investment
Strategic Supply Security
12.7% shared · 3,815 families in both
Japan
China
United States
South Korea
Germany
2,305
1,800
1,307
1,130
383
Strategic Infrastructure
Solid Waste & Recycling
9.1% shared · 4,033 families in both
Japan
China
United States
Germany
South Korea
3,883
3,717
3,628
1,951
1,882
Strategic Infrastructure
Chemicals & Hazardous Process Industry
7.6% shared · 7,017 families in both
United States
Japan
China
Germany
South Korea
16,120
13,036
11,408
6,357
5,716
Production & Innovation
Foundational & Process Industries
7.0% shared · 22,270 families in both
Japan
United States
China
South Korea
Germany
94,317
55,479
36,011
28,513
26,005
Critical Technology
Hydrogen, Ammonia & Sustainable Fuels
6.3% shared · 3,750 families in both
Japan
United States
Germany
South Korea
China
8,805
6,231
5,748
4,176
2,470
Critical Technology
Advanced Chemical & Process Manufacturing
4.8% shared · 1,490 families in both
United States
China
Germany
Japan
France
1,800
855
833
671
543
Strategic Infrastructure
Wastewater & Sanitation
3.5% shared · 1,782 families in both
United States
China
Japan
South Korea
Germany
5,326
5,281
4,432
2,243
2,077
Strategic Infrastructure
Water Supply & Treatment
3.2% shared · 1,548 families in both
United States
China
Japan
South Korea
Germany
5,013
4,301
3,866
1,986
1,665
Strategic Infrastructure
Storage & Fuel Supply
2.0% shared · 1,505 families in both
Japan
United States
Germany
China
South Korea
10,180
8,639
7,064
6,169
4,954
Crosswalk
How Processing & Refining is matched to the patent classifications. The entries below were chosen for it; each stands for itself and everything beneath it in the scheme, 1,446 Cooperative entries in all. A patent family counts when any of its codes, in either scheme and at any office, falls under one of them. Codes since retired are placed under the entries that replaced them.
| Entry | Title in the scheme | Why it is chosen | CPC codes | IPC codes | Documents |
|---|---|---|---|---|---|
| C10G | Cracking hydrocarbon oils; production of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisation; recovery of hydrocarbon oils from oil-shale, oil-sand, or gases; refining mixtures mainly consisting of hydrocarbons; reforming of naphtha; mineral waxes | Oil refining: cracking, hydrotreating, distillation of hydrocarbon oils | 492 | 325 | 1,157,483 |
| C10L3/10 | Working-up natural gas or synthetic natural gas | Natural gas processing and conditioning | 9 | 2 | 38,270 |
| C10B | Destructive distillation of carbonaceous materials for production of gas, coke, tar, or similar materials | Coke ovens and destructive distillation of coal | 182 | 178 | 238,022 |
| C22B | Production and refining of metals; pretreatment of raw materials | Smelting, extraction and refining of non-ferrous metals | 416 | 161 | 809,414 |
| C21B | Manufacture of iron or steel | Ironmaking in blast furnaces and direct reduction | 141 | 51 | 232,562 |
| C25C | Processes for the electrolytic production, recovery or refining of metals; apparatus therefor | Electrowinning and electrolytic refining of metals | 46 | 41 | 165,055 |
| B03B | Separating solid materials using liquids or using pneumatic tables or jigs | Wet and gravity concentration of ores | 78 | 60 | 129,100 |
| B03D | Flotation; differential sedimentation | Froth flotation of ores | 76 | 40 | 148,851 |
| B03C1/00 | Magnetic separation | Magnetic separation of ores | 44 | 35 | 121,710 |
CPC and IPC codes are the codes in use on patent documents, at any office, that fall under the entry. Documents is the larger of the two schemes' counts of documents carrying one of them. An entry with no IPC codes can be told apart only in the Cooperative scheme.
The Cooperative codes in use that count towards Processing & Refining: 1,484 codes on 2,800,205 documents. The 150 most used are listed; the full list is in the cpc-to-capability.csv download.
| Code | Title | Under entry | How placed | Documents |
|---|---|---|---|---|
| C10G2300/202 | Heteroatoms content, i.e. S, N, O, P | C10G | In the scheme | 26,084 |
| C10G2400/02 | Gasoline | C10G | In the scheme | 21,004 |
| C10G2400/20 | C2-C4 olefins | C10G | In the scheme | 19,453 |
| C10B53/02 | Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material | C10B | In the scheme | 17,682 |
| C10G2400/04 | Diesel oil | C10G | In the scheme | 17,370 |
| C22B3/44 | Treatment or purification of solutions, e.g. obtained by leaching by chemical processes | C22B | In the scheme | 16,324 |
| C10G11/18 | Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts according to the "fluidised-bed" technique | C10G | In the scheme | 16,259 |
| C10G1/10 | Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste | C10G | In the scheme | 15,848 |
| C22B7/007 | Wet processes by acid leaching | C22B | In the scheme | 15,587 |
| C22B26/12 | Obtaining lithium | C22B | In the scheme | 15,148 |
| C22B7/006 | Wet processes | C22B | In the scheme | 15,009 |
| C10G2300/1014 | Biomass of vegetal origin | C10G | In the scheme | 14,581 |
| B03C1/30 | Combinations with other devices, not otherwise provided for | B03C1/00 | In the scheme | 14,033 |
| C10G1/002 | Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes | C10G | In the scheme | 14,032 |
| C10G11/05 | Crystalline alumino-silicates, e.g. molecular sieves | C10G | In the scheme | 13,882 |
| C10G45/08 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof | C10G | In the scheme | 13,706 |
| C10G2300/1011 | Biomass | C10G | In the scheme | 13,265 |
| C10G2300/1003 | Waste materials | C10G | In the scheme | 12,953 |
| C10G2300/4006 | Temperature | C10G | In the scheme | 12,497 |
| C10G2400/30 | Aromatics | C10G | In the scheme | 12,438 |
| C10B53/07 | Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres | C10B | In the scheme | 12,434 |
| C22B1/02 | Roasting processes | C22B | In the scheme | 12,430 |
| C10B53/00 | Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form | C10B | In the scheme | 12,313 |
| C10G3/50 | Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids in the presence of hydrogen, hydrogen donors or hydrogen generating compounds | C10G | In the scheme | 11,548 |
| C22B3/08 | Sulfuric acid, other sulfurated acids or salts thereof | C22B | In the scheme | 11,435 |
| C22B59/00 | Obtaining rare earth metals | C22B | In the scheme | 11,398 |
| C22B7/04 | Working-up slag | C22B | In the scheme | 11,367 |
| C10G2300/4081 | Recycling aspects | C10G | In the scheme | 11,288 |
| C22B7/001 | Dry processes | C22B | In the scheme | 11,236 |
| C10G2300/301 | Boiling range | C10G | In the scheme | 11,043 |
| B03D2201/02 | Collectors | B03D | In the scheme | 10,492 |
| C10G1/02 | Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation | C10G | In the scheme | 10,469 |
| B03D1/02 | Froth-flotation processes | B03D | In the scheme | 10,416 |
| C10G65/12 | Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including cracking steps and other hydrotreatment steps | C10G | In the scheme | 10,371 |
| C22B3/42 | Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction | C22B | In the scheme | 10,113 |
| C22B11/04 | Obtaining noble metals by wet processes | C22B | In the scheme | 10,050 |
| C10G2300/70 | Catalyst aspects | C10G | In the scheme | 10,035 |
| C10G1/00 | Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal | C10G | In the scheme | 9,985 |
| C25C7/02 | Electrodes; Connections thereof | C25C | In the scheme | 9,949 |
| C10L3/10 | Working-up natural gas or synthetic natural gas | C10L3/10 | In the scheme | 9,937 |
| C10G2400/10 | Lubricating oil | C10G | In the scheme | 9,748 |
| C22B1/005 | Preliminary treatment of scrap | C22B | In the scheme | 9,585 |
| C10G45/64 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to change the structural skeleton of some of the hydrocarbon content without cracking the other hydrocarbons present, e.g. lowering pour point; Selective hydrocracking of normal paraffins characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves | C10G | In the scheme | 9,262 |
| C10G2/32 | Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts | C10G | In the scheme | 9,162 |
| C10G2300/4018 | Spatial velocity, e.g. LHSV, WHSV | C10G | In the scheme | 9,007 |
| C22B3/22 | Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition | C22B | In the scheme | 8,902 |
| C22B7/02 | Working-up flue dust | C22B | In the scheme | 8,902 |
| C10G2300/4012 | Pressure | C10G | In the scheme | 8,871 |
| C22B3/02 | Apparatus therefor | C22B | In the scheme | 8,478 |
| B03C1/02 | Magnetic separation acting directly on the substance being separated | B03C1/00 | In the scheme | 8,445 |
| C10G2400/08 | Jet fuel | C10G | In the scheme | 8,389 |
| C10G2/332 | Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used containing group VIII-metals of the iron-group | C10G | In the scheme | 8,367 |
| C10G50/00 | Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation | C10G | In the scheme | 8,337 |
| C25C7/06 | Operating or servicing | C25C | In the scheme | 8,336 |
| C22B1/2406 | Binding; Briquetting ; Granulating pelletizing | C22B | In the scheme | 8,268 |
| C10G2300/107 | Atmospheric residues having a boiling point of at least about 538 °C | C10G | In the scheme | 8,207 |
| C21B13/0073 | Selection or treatment of the reducing gases | C21B | In the scheme | 8,203 |
| C10G47/00 | Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions | C10G | In the scheme | 8,143 |
| B03B7/00 | Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage | B03B | In the scheme | 8,084 |
| C10G7/00 | Distillation of hydrocarbon oils | C10G | In the scheme | 8,044 |
| C10G45/02 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing | C10G | In the scheme | 7,964 |
| B03C1/288 | Magnetic plugs and dipsticks disposed at the outer circumference of a recipient | B03C1/00 | In the scheme | 7,817 |
| B03D2203/02 | Ores | B03D | In the scheme | 7,811 |
| C10G9/00 | Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils | C10G | In the scheme | 7,807 |
| C10G3/49 | Catalytic treatment characterised by the catalyst used further characterised by the catalyst support containing crystalline aluminosilicates, e.g. molecular sieves | C10G | In the scheme | 7,726 |
| C25C3/08 | Cell construction, e.g. bottoms, walls, cathodes | C25C | In the scheme | 7,696 |
| C10G2300/1044 | Heavy gasoline or naphtha having a boiling range of about 100 - 180 °C | C10G | In the scheme | 7,638 |
| C25C1/12 | Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper | C25C | In the scheme | 7,587 |
| C10G45/00 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds | C10G | In the scheme | 7,553 |
| C10G45/04 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used | C10G | In the scheme | 7,533 |
| C22B23/0461 | Treatment or purification of solutions, e.g. obtained by leaching by chemical methods | C22B | In the scheme | 7,498 |
| C22B23/043 | Sulfurated acids or salts thereof | C22B | In the scheme | 7,461 |
| C10G2300/1022 | Fischer-Tropsch products | C10G | In the scheme | 7,443 |
| B03B9/00 | General arrangement of separating plant, e.g. flow sheets | B03B | In the scheme | 7,318 |
| B03B9/06 | General arrangement of separating plant, e.g. flow sheets specially adapted for refuse | B03B | In the scheme | 7,280 |
| C10G2300/205 | Metal content | C10G | In the scheme | 7,227 |
| C22B5/10 | Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents | C22B | In the scheme | 7,206 |
| C10G9/36 | Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert preheated fluids, e.g. with molten metals or salts with heated gases or vapours | C10G | In the scheme | 7,159 |
| C10G33/04 | Dewatering or demulsification of hydrocarbon oils with chemical means | C10G | In the scheme | 7,153 |
| C22B3/24 | Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins | C22B | In the scheme | 7,111 |
| C25C7/00 | Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells | C25C | In the scheme | 7,024 |
| C22B1/00 | Preliminary treatment of ores or scrap | C22B | In the scheme | 6,798 |
| C22B7/005 | Separation by a physical processing technique only, e.g. by mechanical breaking | C22B | In the scheme | 6,766 |
| C22B1/16 | Sintering; Agglomerating | C22B | In the scheme | 6,709 |
| C21B13/14 | Multi-stage processes processes carried out in different vessels or furnaces | C21B | In the scheme | 6,674 |
| C10G2300/1033 | Oil well production fluids | C10G | In the scheme | 6,532 |
| C22B3/04 | Extraction of metal compounds from ores or concentrates by wet processes by leaching | C22B | In the scheme | 6,438 |
| C22B47/00 | Obtaining manganese | C22B | In the scheme | 6,431 |
| B03B9/061 | General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial | B03B | In the scheme | 6,406 |
| C22B3/06 | Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions | C22B | In the scheme | 6,369 |
| C10G25/003 | Specific sorbent material, not covered by C10G25/02 or C10G25/03 | C10G | In the scheme | 6,338 |
| B03C1/0332 | Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets | B03C1/00 | In the scheme | 6,279 |
| C10G2300/1077 | Vacuum residues | C10G | In the scheme | 6,228 |
| B03C1/01 | Pretreatment specially adapted for magnetic separation by addition of magnetic adjuvants | B03C1/00 | In the scheme | 6,196 |
| C22B7/00 | Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals | C22B | In the scheme | 6,184 |
| C22B3/10 | Hydrochloric acid, other halogenated acids or salts thereof | C22B | In the scheme | 6,177 |
| C10L3/103 | Sulfur containing contaminants | C10L3/10 | In the scheme | 6,173 |
| C22B3/26 | Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds | C22B | In the scheme | 6,101 |
| C22B9/18 | Electroslag remelting | C22B | In the scheme | 6,078 |
| C22B9/05 | Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ | C22B | In the scheme | 6,070 |
| C21B2100/44 | Removing particles, e.g. by scrubbing, dedusting | C21B | In the scheme | 6,043 |
| C10G3/00 | Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids | C10G | In the scheme | 5,931 |
| C10L3/104 | Carbon dioxide | C10L3/10 | In the scheme | 5,926 |
| C22B15/0071 | Leaching or slurrying with acids or salts thereof containing sulfur | C22B | In the scheme | 5,900 |
| C10G45/58 | Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to change the structural skeleton of some of the hydrocarbon content without cracking the other hydrocarbons present, e.g. lowering pour point; Selective hydrocracking of normal paraffins | C10G | In the scheme | 5,888 |
| C10G2300/302 | Viscosity | C10G | In the scheme | 5,815 |
| C22B5/04 | Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon | C22B | In the scheme | 5,799 |
| C10G3/42 | Catalytic treatment | C10G | In the scheme | 5,783 |
| C21B7/24 | Test rods or other checking devices | C21B | In the scheme | 5,754 |
| C10G2300/44 | Solvents | C10G | In the scheme | 5,737 |
| C10G67/02 | Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only | C10G | In the scheme | 5,600 |
| C10G11/182 | Regeneration | C10G | In the scheme | 5,546 |
| C22B26/22 | Obtaining magnesium | C22B | In the scheme | 5,544 |
| C21B13/00 | Making spongy iron or liquid steel, by direct processes | C21B | In the scheme | 5,463 |
| C10G2300/308 | Gravity, density, e.g. API | C10G | In the scheme | 5,446 |
| C10G2300/207 | Acid gases, e.g. H2S, COS, SO2, HCN | C10G | In the scheme | 5,431 |
| B03D1/008 | Organic compounds containing oxygen | B03D | In the scheme | 5,415 |
| B03D1/012 | Organic compounds containing sulfur | B03D | In the scheme | 5,360 |
| C21B3/08 | Cooling slag | C21B | In the scheme | 5,353 |
| C22B1/24 | Binding; Briquetting ; Granulating | C22B | In the scheme | 5,331 |
| C10G47/16 | Crystalline alumino-silicate carriers | C10G | In the scheme | 5,290 |
| C10G2300/1018 | Biomass of animal origin | C10G | In the scheme | 5,234 |
| C10G1/04 | Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction | C10G | In the scheme | 5,228 |
| C10G65/04 | Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps | C10G | In the scheme | 5,157 |
| C10G2300/1037 | Hydrocarbon fractions | C10G | In the scheme | 5,126 |
| C10G69/06 | Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of thermal cracking in the absence of hydrogen | C10G | In the scheme | 5,122 |
| C10L3/101 | Removal of contaminants | C10L3/10 | In the scheme | 5,086 |
| C10G3/46 | Catalytic treatment characterised by the catalyst used containing iron group metals or compounds thereof in combination with chromium, molybdenum, tungsten metals or compounds thereof | C10G | In the scheme | 5,054 |
| C10G35/095 | Catalytic reforming characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves | C10G | In the scheme | 5,000 |
| C10G2300/1096 | Aromatics or polyaromatics | C10G | In the scheme | 4,974 |
| C10G29/205 | Organic compounds not containing metal atoms by reaction with hydrocarbons added to the hydrocarbon oil | C10G | In the scheme | 4,953 |
| C10G11/00 | Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils | C10G | In the scheme | 4,933 |
| C10B55/00 | Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material | C10B | In the scheme | 4,895 |
| B03D1/1462 | Discharge mechanisms for the froth | B03D | In the scheme | 4,883 |
| B03D1/028 | Control and monitoring of flotation processes; computer models therefor | B03D | In the scheme | 4,781 |
| C21B7/10 | Cooling; Devices therefor | C21B | In the scheme | 4,763 |
| C22B5/12 | Dry methods smelting of sulfides or formation of mattes by gases | C22B | In the scheme | 4,727 |
| C22B3/18 | Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae | C22B | In the scheme | 4,722 |
| C10B57/06 | Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives | C10B | In the scheme | 4,708 |
| B03D1/01 | Organic compounds containing nitrogen | B03D | In the scheme | 4,690 |
| C10G9/20 | Tube furnaces | C10G | In the scheme | 4,666 |
| C22B9/02 | Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves | C22B | In the scheme | 4,646 |
| C22B34/22 | Obtaining vanadium | C22B | In the scheme | 4,629 |
| C10G2/30 | Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen | C10G | In the scheme | 4,615 |
| C21B3/06 | Treatment of liquid slag | C21B | In the scheme | 4,601 |
| C10G2400/22 | Higher olefins | C10G | In the scheme | 4,589 |
| C22B7/008 | Wet processes by an alkaline or ammoniacal leaching | C22B | In the scheme | 4,586 |
| C21B5/00 | Making pig-iron in the blast furnace | C21B | In the scheme | 4,578 |
| B03B11/00 | Feed or discharge devices integral with washing or wet-separating equipment | B03B | In the scheme | 4,556 |
| C10G69/04 | Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of catalytic cracking in the absence of hydrogen | C10G | In the scheme | 4,530 |