Two-stroke pumping method and oil production device
US-12258949-B2 · Mar 25, 2025 · US
Disc valves
Disc 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 | F04B53/127 |
| Official title | {Disc valves} |
| Display label | Disc valves |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flexible manifold for reciprocating pump
US-12247563-B2 · Mar 11, 2025 · US
Pump fluid end with suction valve closure assist
US-12228127-B2 · Feb 18, 2025 · US
Cleaning unit
US-12179715-B2 · Dec 31, 2024 · US
Pump body, compressor, and heat exchange apparatus
US-12135020-B2 · Nov 5, 2024 · US
Flexible Manifold for Reciprocating Pump
US-2024254986-A1 · Aug 1, 2024 · US
Plunger, hydraulic end and plunger pump
US-12000386-B2 · Jun 4, 2024 · US
Flexible manifold for reciprocating pump
US-11965503-B2 · Apr 23, 2024 · US
Pump fluid end with suction valve closure assist
US-2024110550-A1 · Apr 4, 2024 · US
Pump fluid end with suction valve closure assist
US-11885316-B2 · Jan 30, 2024 · US
Pump fluid end with easy access suction valve
US-11739748-B2 · Aug 29, 2023 · US
Plunger actuated valve
US-11708823-B1 · Jul 25, 2023 · US
Two-stroke pumping method and oil production device
US-2023024940-A1 · Jan 26, 2023 · US
Pump body, compressor, and heat exchange apparatus
US-2022412332-A1 · Dec 29, 2022 · US
Plunger, hydraulic end and plunger pump
US-2022316461-A1 · Oct 6, 2022 · US
Pump fluid end with positional indifference for maintenance
US-11441687-B2 · Sep 13, 2022 · US
Pump Fluid End with Suction Valve Closure Assist
US-2022154705-A1 · May 19, 2022 · US
Flexible Manifold for Reciprocating Pump
US-2022154704-A1 · May 19, 2022 · US
Pump fluid end with suction valve closure assist
US-11280326-B2 · Mar 22, 2022 · US
Pump valve seat with supplemental retention
US-11231111-B2 · Jan 25, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B53/127?
- CPC F04B53/127 is the Cooperative Patent Classification code for “Disc valves.”
- How many patents are filed under CPC F04B53/127 (Disc valves)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F04B53/127 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).