Hydrogen fuel pressure energy recovery for hydrogen engine vehicles
US-12372037-B2 · Jul 29, 2025 · US
having other positive-displacement pumping elements, e.g. rotary
having other positive-displacement pumping elements, e.g. rotary · 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 | F02M59/12 |
| Official title | having other positive-displacement pumping elements, e.g. rotary |
| Display label | having other positive-displacement pumping elements, e.g. rotary |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 10 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrogen Fuel Pressure Energy Recovery for Hydrogen Engine Vehicles
US-2025027457-A1 · Jan 23, 2025 · US
High-pressure fuel pump
US-11808242-B2 · Nov 7, 2023 · US
Priming pump
US-11703020-B2 · Jul 18, 2023 · US
Slide of variable oil pump for vehicle and method of manufacturing the same
US-11668298-B2 · Jun 6, 2023 · US
Fuel pump with determinant translating cam arrangement
US-2023096852-A1 · Mar 30, 2023 · US
Dual rail pressure control for engine noise improvement
US-11459973-B2 · Oct 4, 2022 · US
Priming pump
US-2022243690-A1 · Aug 4, 2022 · US
Priming pump
US-11274641-B1 · Mar 15, 2022 · US
High-Pressure Fuel Pump
US-2022049674-A1 · Feb 17, 2022 · US
Dual rail pressure control for engine noise improvement
US-2021404410-A1 · Dec 30, 2021 · US
Systeme d'injection hydraulique a came
US-2021108602-A1 · Apr 15, 2021 · US
Fuel pump
US-10934985-B2 · Mar 2, 2021 · US
Method and apparatus for operating an EC-fuel pump
US-10794318-B2 · Oct 6, 2020 · US
Slide of Variable Oil Pump for Vehicle and Method of Manufacturing the Same
US-2020141404-A1 · May 7, 2020 · US
Fluid pump with rotating pumping element wear reduction
US-10584701-B2 · Mar 10, 2020 · US
Pumping assembly to feed fuel, preferably diesel fuel, to an internal combustion engine
US-2019055942-A1 · Feb 21, 2019 · US
Method for controlling an electric motor of a vehicle pump
US-10132264-B2 · Nov 20, 2018 · US
Hydromechanical fuel system with dual bypass
US-10125732-B1 · Nov 13, 2018 · US
Rotary piston pump comprising radial bearings on only one housing part
US-2018209417-A1 · Jul 26, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M59/12?
- CPC F02M59/12 is the Cooperative Patent Classification code for “having other positive-displacement pumping elements, e.g. rotary.”
- How many patents are filed under CPC F02M59/12 (having other positive-displacement pumping elements, e.g. rotary)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC F02M59/12 growing?
- Publication counts under this code: 4 in 2023 vs 2 in 2025 (latest complete years).