Rotary Pump
US-2023383691-A1 · Nov 30, 2023 · US
Pistons
Pistons · 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 | F02B55/02 |
| Official title | Pistons |
| Display label | Pistons |
| Total patents | 64 |
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 | 3 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 2 |
| 2020 | 14 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary engine
US-11732640-B2 · Aug 22, 2023 · US
Topological rotary engine
US-11713710-B2 · Aug 1, 2023 · US
Oblong-shaped rotor engine having high sealing performance
US-11668232-B2 · Jun 6, 2023 · US
Rotary engine
US-2023151762-A1 · May 18, 2023 · US
Rotary engine with housing having silicon carbide plate
US-11613995-B2 · Mar 28, 2023 · US
Vane drive rotary combustion engine
US-11585221-B1 · Feb 21, 2023 · US
Oblong-shaped rotor engine having high sealing performance
US-2023053217-A1 · Feb 16, 2023 · US
Topological rotary engine
US-2022307413-A1 · Sep 29, 2022 · US
Rotary internal combustion engine with seal lubrication
US-11428128-B2 · Aug 30, 2022 · US
Pivot valve for rotary internal combustion engine
US-11421584-B1 · Aug 23, 2022 · US
Piston assembly for an internal combustion engine of a motor vehicle
US-11313466-B2 · Apr 26, 2022 · US
Rotary piston engine
US-11300044-B2 · Apr 12, 2022 · US
Rotary internal combustion engine with unequal volumetric ratios
US-11261781-B2 · Mar 1, 2022 · US
Compound engine system with rotary engine
US-11187146-B2 · Nov 30, 2021 · US
Sealing member
US-11143029-B2 · Oct 12, 2021 · US
Rotary internal combustion engine
US-11143098-B1 · Oct 12, 2021 · US
Apex seal arrangement for rotary internal combustion engine
US-11131194-B2 · Sep 28, 2021 · US
Rotary internal combustion engine with seal lubrication
US-2021231033-A1 · Jul 29, 2021 · US
Rotary piston engine
US-2021164387-A1 · Jun 3, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B55/02?
- CPC F02B55/02 is the Cooperative Patent Classification code for “Pistons.”
- How many patents are filed under CPC F02B55/02 (Pistons)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC F02B55/02 growing?
- Publication counts under this code: 8 in 2023 vs 4 in 2024 (latest complete years).