Evaporated fuel treatment device
US-2026021437-A1 · Jan 22, 2026 · US
Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22)
Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22) · 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 | F02M33/00 |
| Official title | Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22) |
| Display label | Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22) |
| Total patents | 50 |
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 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Deaerator impeller rotor with gear rotor
US-2025116245-A1 · Apr 10, 2025 · US
Oil-gas treatment system, oil-gas treatment method and mechanical apparatus
US-12257543-B2 · Mar 25, 2025 · US
System and method for monitoring fuel additives
US-11879388-B2 · Jan 23, 2024 · US
Separating a fuel on-board a vehicle
US-11719200-B2 · Aug 8, 2023 · US
Engine
US-11624327-B2 · Apr 11, 2023 · US
A method and a relative apparatus for producing liquified gases
US-2023031323-A1 · Feb 2, 2023 · US
Capillary action water evaporator for charge-air cooler
US-11566590-B1 · Jan 31, 2023 · US
Oxycombustion engine systems including recirculation management features
US-11512656-B2 · Nov 29, 2022 · US
Fuel reform apparatus
US-11466647-B2 · Oct 11, 2022 · US
Oil-gas treatment system, oil-gas treatment method and mechanical apparatus
US-2022250000-A1 · Aug 11, 2022 · US
Fuel reform apparatus
US-2022235729-A1 · Jul 28, 2022 · US
Engine
US-2022163002-A1 · May 26, 2022 · US
Oxycombustion engine systems including recirculation management features
US-2022120228-A1 · Apr 21, 2022 · US
Exchangeable filter system
US-11298637-B2 · Apr 12, 2022 · US
System and method for monitoring fuel additives
US-2022056841-A1 · Feb 24, 2022 · US
System and method for monitoring fuel additives
US-11193420-B2 · Dec 7, 2021 · US
Air intake systems having condensate retaining structures
US-11143147-B2 · Oct 12, 2021 · US
Internal combustion engine
US-11131277-B2 · Sep 28, 2021 · US
Internal combustion engine
US-2021189953-A1 · Jun 24, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M33/00?
- CPC F02M33/00 is the Cooperative Patent Classification code for “Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22).”
- How many patents are filed under CPC F02M33/00 (Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M35/00; arrangements for purifying liquid fuel F02M37/22))?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC F02M33/00 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).