Inline landfill pump cycle counter
US-12492696-B2 · Dec 9, 2025 · US
Poppet valves
Poppet valves · 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 | F04B53/129 |
| Official title | {Poppet valves} |
| Display label | Poppet valves |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fracturing pump arrangement using a plunger with an internal fluid passage
US-12473910-B2 · Nov 18, 2025 · US
Fracturing pump arrangement using a plunger with an internal fluid passage
US-2025290505-A1 · Sep 18, 2025 · US
Pressure regulator for engine lubrication system
US-12326103-B2 · Jun 10, 2025 · US
Pressure regulator for engine lubrication system
US-2023193793-A1 · Jun 22, 2023 · US
Unibody bypass plunger and valve cage with sealable ports
US-11578570-B2 · Feb 14, 2023 · US
Pneumatic surge suppressor
US-11499543-B2 · Nov 15, 2022 · US
Plug and valve integrated cone valve pump with combined type movable and fixed three cylinders and two spiral centralizers
US-11434702-B2 · Sep 6, 2022 · US
Unibody bypass plunger and valve cage with sealable ports
US-2022275712-A1 · Sep 1, 2022 · US
Unibody bypass plunger and valve cage with sealable ports
US-11401789-B2 · Aug 2, 2022 · US
Plug and valve integrated cone valve pump with combined type movable and fixed three cylinders and two spiral centralizers
US-2021324688-A1 · Oct 21, 2021 · US
Pneumatic surge suppressor
US-2021310481-A1 · Oct 7, 2021 · US
Fuel delivery injector
US-11002234-B2 · May 11, 2021 · US
Unibody bypass plunger and valve cage with sealable ports
US-2021131239-A1 · May 6, 2021 · US
Unibody bypass plunger and valve cage with sealable ports
US-10907453-B2 · Feb 2, 2021 · US
Reciprocating pump injector
US-10859073-B2 · Dec 8, 2020 · US
Multi-material frac valve poppet
US-10808851-B1 · Oct 20, 2020 · US
Pump plunger with wrench features
US-10808846-B1 · Oct 20, 2020 · US
Fuel delivery injector
US-2020256295-A1 · Aug 13, 2020 · US
Unibody bypass plunger and valve cage with sealable ports
US-2020256170-A1 · Aug 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B53/129?
- CPC F04B53/129 is the Cooperative Patent Classification code for “Poppet valves.”
- How many patents are filed under CPC F04B53/129 (Poppet valves)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F04B53/129 growing?
- Publication counts under this code: 2 in 2023 vs 4 in 2025 (latest complete years).