Check valve for overflow oil line when pressure fill fittings are remote
US-10514107-B2 · Dec 24, 2019 · US
the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence)
the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence) · 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 | F16K15/021 |
| Official title | {the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence)} |
| Display label | the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence) |
| Total patents | 130 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 12 |
| 2017 | 15 |
| 2018 | 12 |
| 2019 | 18 |
| 2020 | 13 |
| 2021 | 13 |
| 2022 | 17 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pilot check valve
US-10458560-B2 · Oct 29, 2019 · US
Valve device
US-2019323626-A1 · Oct 24, 2019 · US
Fluid release valve
US-10435999-B2 · Oct 8, 2019 · US
Compressor
US-2019277285-A1 · Sep 12, 2019 · US
Check valve and method of forming a check valve
US-10330209-B2 · Jun 25, 2019 · US
Check valves
US-10295070-B2 · May 21, 2019 · US
Anti-refill closure assembly
US-10293992-B2 · May 21, 2019 · US
Check valve with improved response time
US-10274094-B2 · Apr 30, 2019 · US
Pressure relief valve tuning feature
US-10215296-B2 · Feb 26, 2019 · US
Check valve with valve member biased by connectors extending from a valve seat for operation of a subterranean tool
US-10184317-B2 · Jan 22, 2019 · US
Static back pressure regulator
US-10184578-B2 · Jan 22, 2019 · US
Multi-stage poppet valve
US-10167973-B2 · Jan 1, 2019 · US
Check valve for overflow oil line when pressure fill fittings are remote
US-2018355987-A1 · Dec 13, 2018 · US
Relief valve assembly and components thereof
US-2018320682-A1 · Nov 8, 2018 · US
Relief valve assembly and components thereof
US-10054118-B2 · Aug 21, 2018 · US
Valve device
US-10041601-B2 · Aug 7, 2018 · US
Check valve and method of forming a check valve
US-2018209553-A1 · Jul 26, 2018 · US
Compressed air drying system and check valve used in compressed air drying system
US-2018111082-A1 · Apr 26, 2018 · US
Valve assembly
US-9927036-B2 · Mar 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/021?
- CPC F16K15/021 is the Cooperative Patent Classification code for “the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence).”
- How many patents are filed under CPC F16K15/021 (the valve member being a movable body around which the medium flows when the valve is open (F16K15/025 - F16K15/12 take precedence))?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/021 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).