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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 filing trajectory.

1,392
US patents granted
C10
Parent CPC class
20
Active assignees
-43%
5-yr velocity

The verdict

Production OF Producer GAS ranks #415 of 670 CPC technology areas - 1,392 US patents granted since 2015, with filing down 43% over five years.

#415
of 670 CPC technology areas
1,392
US patents granted, 2015–2025
General Electric
leading assignee (101)
-43%
filing velocity, last 5 yrs
Top assignee: General Electric Company (101 patents)

CPC subclass C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES ; CARBURETTING AIR OR OTHER GASES - covers 1,392 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C10 (PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT). See our CPC classification guide for how the system works.

The competitive landscape in C10J is shaped by 20 distinct companies actively filing in this space. General Electric Company leads with 101 patents, followed by Mitsubishi Hitachi Power Systems, Ltd. at 25 grants and RES USA, Llc at 20.

Filing activity in C10J is down 43% over the past five years versus 2015-2019, a notable slowdown that may signal a maturing field. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C10J innovation accelerating?

US utility-patent grants per year in C10J, 2015–2025 - recent five years are down 43% 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

About This Class

CPC subclass C10J belongs to class C10.

1,392 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

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).

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 I…Mitsubishi Hitachi Po…Res UsaAir Products And Chem…MawetalInentecAccordant EnergyLummus TechnologyFulcrum BioenergyAries CleanMitsubishi PowerGas Technology Instit…Wuhan Kaidi Engineeri…Velocys
Top 14 C10J assignees by class footprint. Bubble size = patents in C10J. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C10J?
CPC subclass C10J covers PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES ; CARBURETTING AIR OR OTHER GASES. It belongs to CPC class C10 (PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT), with 1,392 US utility patents granted since 2015.
How many patents have been filed in C10J?
1,392 US utility patents were granted in CPC subclass C10J between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C10J?
General Electric Company leads C10J with 101 patents, making it the most active assignee in this technology area.
How is patent data for C10J collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., C10) is a broad technology category. Subclasses like C10J provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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.