Fuel supply device and engine system
US-2025290478-A1 · Sep 18, 2025 · US
adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02M25/10 |
| Official title | adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone |
| Display label | adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 7 |
| 2019 | 12 |
| 2020 | 6 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for operating an engine
US-11578684-B2 · Feb 14, 2023 · US
System for controlling hydrogen combustion in a hydrogen internal combustion engine
US-2023010136-A1 · Jan 12, 2023 · US
Methods and systems for a ducted injector
US-11480143-B2 · Oct 25, 2022 · US
Hydrogen reformer using exhaust gas
US-11318436-B2 · May 3, 2022 · US
Methods and systems for a ducted injector
US-2022042484-A1 · Feb 10, 2022 · US
Engines Including Air-Separation Emissions Mitigation Systems and Methods for Operating the Same
US-2022034268-A1 · Feb 3, 2022 · US
Method for operating an engine
US-2022034284-A1 · Feb 3, 2022 · US
System and method for on-board catalytic upgrading of hydrocarbon fuels
US-11028805-B2 · Jun 8, 2021 · US
Recirculating noble gas internal combustion power cycle
US-10830185-B2 · Nov 10, 2020 · US
System and method for on-board catalytic upgrading of hydrocarbon fuels
US-2020217280-A1 · Jul 9, 2020 · US
Fluid delivery port of an integral intake manifold
US-10626832-B2 · Apr 21, 2020 · US
Adjusting a fuel on-board a vehicle
US-10611238-B2 · Apr 7, 2020 · US
Hydrogen reformer using exhaust gas
US-2020047145-A1 · Feb 13, 2020 · US
Control system for internal combustion engine
US-10544742-B2 · Jan 28, 2020 · US
Quaternary ammonium fuel additives
US-2019382674-A1 · Dec 19, 2019 · US
Combustion-stabilizing device and combustion-stabilizing method for internal combustion engine
US-10436127-B2 · Oct 8, 2019 · US
Internal combustion engine
US-10415512-B2 · Sep 17, 2019 · US
Nitrogen enriched air supply for gasoline compression ignition combustion
US-10378427-B2 · Aug 13, 2019 · US
Fuel reforming system and control method of coolant supply
US-10371104-B2 · Aug 6, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M25/10?
- CPC F02M25/10 is the Cooperative Patent Classification code for “adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone.”
- How many patents are filed under CPC F02M25/10 (adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC F02M25/10 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2025 (latest complete years).