Ammonia cracking for multi-fuel engines
US-12552419-B2 · Feb 17, 2026 · US
involving catalysts
involving catalysts · 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 | F02B51/02 |
| Official title | involving catalysts |
| Display label | involving catalysts |
| Total patents | 27 |
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 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammonia cracking for multi-fuel engines
US-2025136155-A1 · May 1, 2025 · US
Prechamber ignited engine and operating methods therefor
US-12168952-B1 · Dec 17, 2024 · US
Systems and methods for pilot fuel synthesis using engine waste heat
US-12078115-B1 · Sep 3, 2024 · US
Marine methanol inert gas blanketing
US-2023417206-A1 · Dec 28, 2023 · US
Engine system
US-11713727-B2 · Aug 1, 2023 · US
Engine system
US-11578686-B2 · Feb 14, 2023 · US
Wastegate valve
US-11560832-B2 · Jan 24, 2023 · US
Engine system
US-2022205415-A1 · Jun 30, 2022 · US
Engine system
US-2022170415-A1 · Jun 2, 2022 · US
Wastegate valve
US-2021189949-A1 · Jun 24, 2021 · US
Control device for internal combustion engine and control method for internal combustion engine
US-10907554-B2 · Feb 2, 2021 · US
Control device for internal combustion engine and control method for internal combustion engine
US-10883452-B2 · Jan 5, 2021 · US
Piston having an undercrown surface with coating and method of manufacture thereof
US-2020088127-A1 · Mar 19, 2020 · US
Control device for internal combustion engine and control method for internal combustion engine
US-2019293003-A1 · Sep 26, 2019 · US
Control device for internal combustion engine and control method for internal combustion engine
US-2019249626-A1 · Aug 15, 2019 · US
Vehicle powertrain with onboard catalytic reformer
US-10001091-B2 · Jun 19, 2018 · US
Wastegate valve
US-2017152793-A1 · Jun 1, 2017 · US
Propulsion device and method for operating same using a partially oxidized diesel fuel
US-9644578-B2 · May 9, 2017 · US
Vehicle powertrain with onboard catalytic reformer
US-9617490-B2 · Apr 11, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B51/02?
- CPC F02B51/02 is the Cooperative Patent Classification code for “involving catalysts.”
- How many patents are filed under CPC F02B51/02 (involving catalysts)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F02B51/02 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).