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CPC technology class · C10

C10J - Production Of Producer Gas

Production of producer gas, water-gas, synthesis gas from solid carbonaceous material, or mixtures containing these gases ; carburetting air or other gases. 1,392 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

1,392
US patents granted
#6/10
in C10
5.1%
C10 class share
-51%
5-yr velocity

The verdict

According to USPTO PatentsView, Production Of Producer Gas ranks #415 of 670 CPC technology areas - 1,392 US patents granted since 2015, with recorded grant volume down 51% over five years.

#415
of 670 CPC technology areas
1,392
US patents granted, 2015–2025
General Electric
leading assignee (101)
-51%
grant velocity, last 5 yrs

How C10J's grant cadence moved

Between 2020–2024, C10J recorded 415 grants versus 847 in 2015–2019 (-51% equal-window velocity). Across complete years, output peaked in 2015 at 247 grants and bottomed in 2021 at 66 (+274% peak-over-trough). Lead assignee ThermoChem Recovery International, Inc. holds 2.1% of the class ; the top three share 5.3%.

Leaderboard read

C10J concentration, lead at 2.1%

ThermoChem Recovery International, Inc. leads this historical grant record at 2.1% of C10J - us corporation assignees hold 60% of class grants (365 of 605). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
2.1%

29 of 1,392 grants

Top three share
5.3%

of the class's recorded grants

Lead over #2
4

more grants than Mitsubishi Hitachi Power Systems, Ltd.

Where C10J sits inside C10

Among 10 subclasses in C10 (Petroleum, GAS OR Coke INDUSTRIES; Technical Gases Containing Carbon MONOXIDE; FUELS; LUBRICANTS; Peat), C10J ranks #6 and holds 5.1% of the parent class's 27,322 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C10G 9,942 C10L 5,025 C10M 4,240 C10N 3,834 C10B 1,527 C10K 1,080 C10C 264 C10F 12

Rising assignees active in C10J

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

  1. #1 thyssenkrupp Uhde GmbH 14x 0 → 14 company-wide · 10 in C10J
  2. #2 Aries Clean Technologies LLC 11x 0 → 11 company-wide · 12 in C10J
  3. #3 Velocys Technologies Ltd 5.00x 3 → 15 company-wide · 11 in C10J
  4. #4 Torrgas Technology B.V. 4.00x 1 → 4 company-wide · 6 in C10J
  5. #5 LanzaTech, Inc. 3.63x 8 → 29 company-wide · 7 in C10J

C10J grants by year, peak 2015 (247)

US utility-patent grants per year in C10J, 2015–2025 - recent five years are down 51% versus 2015–2019.

50100150200250300 20152016201720182019202020212022202320242025 69

Who leads C10J?

The 12 most active assignees in Production OF Producer GAS, Water-gas, Synthesis GAS From Solid Carbonaceous Material, OR Mixtures Containing These Gases ; Carburetting AIR OR Other Gases - wider bars mean more grants

patents

What this shows General Electric is the most active filer in C10J, holding 101 of the 1,392 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass C10J
Rank Company Patents in C10J
#1 ThermoChem Recovery International, Inc. 29
#2 Mitsubishi Hitachi Power Systems, Ltd. 25
#3 RES USA, LLC 20
#4 AIR Products AND Chemicals, Inc. 17
#5 Mawetal LLC 17
#6 InEnTec Inc. 16
#7 Accordant Energy, LLC 15
#8 Lummus Technology LLC 14
#9 Fulcrum BioEnergy, Inc. 13
#10 Aries Clean Technologies LLC 12
#11 Mitsubishi Power, Ltd. 11
#12 GAS Technology Institute 11
#13 Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. 11
#14 Velocys Technologies Ltd 11
#15 V-grid Energy Systems, Inc. 11
#16 thyssenkrupp Uhde GmbH 10
#17 GreatPoint Energy, Inc. 10
#18 Sundrop Fuels, Inc. 10
#19 Kellogg Brown & Root LLC 8
#20 McAlister Technologies, LLC 8

Footprint here vs. claim strategy

Each dot is a leading C10J assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 C10J assignees by class footprint. Bubble size = patents in C10J. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 010203040 1015202530 Patents in C10J Avg claims / patent (company-wide) Thermochem Recovery…Mitsubishi Hitachi…Res UsaAir Products And…MawetalInentecAccordant EnergyLummus TechnologyFulcrum BioenergyAries CleanMitsubishi PowerGas Technology…Wuhan Kaidi Engineerin…Velocys
Top 14 C10J assignees by class footprint. Bubble size = patents in C10J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near C10J's 1,392-grant footprint

Nationwide nearest neighbors for C10J (#415 of 670 by volume ; lead share 7.3%) - not the C10 parent-class siblings above.

Nearest by grant volume

E03F 1,375 G04F 1,418 D21C 1,427 B65F 1,429

Nearest by lead-assignee share

B61L 7.3% B22C 7.2% H02G 7.2% F01M 7.2%

Questions about C10J

Which company holds the most patents in C10J?
General Electric Company leads C10J with 101 patents (2.1% of the subclass). By PatentsView assignee type, us corporations account for 60% of class grants.
Which C10J assignees grew fastest recently?
Among assignees with ≥5 grants in C10J, thyssenkrupp Uhde GmbH shows the highest company-wide grant multiple (14x: 0 grants in 2019–2021 → 14 in 2022–2024) while holding 10 patents in this subclass. Growth is company-wide, not class-only.
How does C10J compare inside parent class C10?
Inside C10 (Petroleum, GAS OR Coke INDUSTRIES; Technical Gases Containing Carbon MONOXIDE; FUELS; LUBRICANTS; Peat), C10J ranks #6 of 10 subclasses by grant volume and holds 5.1% of the parent class total. The largest sibling is C10G (9,942 grants).

What to do with this data

C10J in context - here's where to go next.

  • ThermoChem Recovery International, Inc. leads C10J with 29 grants in this class. See full portfolio
  • C10J ranks #415 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class C10, the largest sibling subclass is C10G with 9,942 grants. Explore C10G

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - C10J figures are USPTO PatentsView granted-utility totals for this subclass (1,392 grants in the tracked window).

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.