Engine assembly with intercooler
US-2018363540-A1 · Dec 20, 2018 · US
Wankel engines
Wankel engines · 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 | F02B2053/005 |
| Official title | {Wankel engines} |
| Display label | Wankel engines |
| Total patents | 212 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 15 |
| 2017 | 17 |
| 2018 | 29 |
| 2019 | 28 |
| 2020 | 36 |
| 2021 | 22 |
| 2022 | 18 |
| 2023 | 6 |
| 2024 | 21 |
| 2025 | 14 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal combustion engine cooling system
US-2018355787-A1 · Dec 13, 2018 · US
Method of operating an engine having a pilot subchamber at partial load conditions
US-2018347450-A1 · Dec 6, 2018 · US
Rotary engine casing
US-2018347457-A1 · Dec 6, 2018 · US
Rotary engine and method of combusting fuel
US-10145291-B1 · Dec 4, 2018 · US
Rotary internal combustion engine
US-10138804-B2 · Nov 27, 2018 · US
Synchronous Machine Module, Vehicle Drive and Vehicle
US-2018278184-A1 · Sep 27, 2018 · US
Internal combustion engine with igniter cooling sleeve
US-2018274513-A1 · Sep 27, 2018 · US
Rotary internal combustion engine with unequal volumetric ratios
US-2018223728-A1 · Aug 9, 2018 · US
Internal combustion engine with split pilot injection
US-10041402-B2 · Aug 7, 2018 · US
Rotary internal combustion engine with pilot subchamber and ignition element
US-2018209332-A1 · Jul 26, 2018 · US
Turbofan engine assembly with intercooler
US-2018202357-A1 · Jul 19, 2018 · US
Compound engine assembly with cantilevered compressor and turbine
US-2018179948-A1 · Jun 28, 2018 · US
Rotary internal combustion engine with pilot subchamber and ignition element
US-10006359-B2 · Jun 26, 2018 · US
Engine assembly with turbine support casing
US-9970295-B2 · May 15, 2018 · US
Auxiliary power unit inlet assembly with particle separator
US-2018106225-A1 · Apr 19, 2018 · US
Method of operating an engine having a pilot subchamber at partial load conditions
US-2018087446-A1 · Mar 29, 2018 · US
Rotary internal combustion engine with exhaust purge
US-9926842-B2 · Mar 27, 2018 · US
Inlet guide assembly
US-9890649-B2 · Feb 13, 2018 · US
Compound engine assembly with common inlet
US-2018030883-A1 · Feb 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B2053/005?
- CPC F02B2053/005 is the Cooperative Patent Classification code for “Wankel engines.”
- How many patents are filed under CPC F02B2053/005 (Wankel engines)?
- Our database includes 212 publications tagged with this CPC code.
- Is patent activity under CPC F02B2053/005 growing?
- Publication counts under this code: 21 in 2024 vs 14 in 2025 (latest complete years).