Adjustable position sensitive base valve
US-2025237285-A1 · Jul 24, 2025 · US
shaped as rings
shaped as rings · 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 | F16K15/08 |
| Official title | shaped as rings |
| Display label | shaped as rings |
| Total patents | 45 |
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 | 5 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 9 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Shock absorber
US-2024344586-A1 · Oct 17, 2024 · US
Rotary compressor with backflow suppresion mechanism for an introduction path
US-11906060-B2 · Feb 20, 2024 · US
Flow control valve, oil pump assembly having the flow control valve, and scroll compressor
US-11885327-B2 · Jan 30, 2024 · US
Flow control device with drain check
US-11511290-B2 · Nov 29, 2022 · US
Check valve insert defining an open position and check valves having same
US-11486504-B2 · Nov 1, 2022 · US
Gas purge port
US-11448330-B2 · Sep 20, 2022 · US
Magnetic check valve with applications in fuel cell systems
US-11435008-B2 · Sep 6, 2022 · US
Valve device
US-11401841-B2 · Aug 2, 2022 · US
Flow control valve, oil pump assembly having the flow control valve, and scroll compressor
US-2022196015-A1 · Jun 23, 2022 · US
Reciprocating gas compressor valve
US-11365730-B2 · Jun 21, 2022 · US
Rotary compressor
US-2022178372-A1 · Jun 9, 2022 · US
Automatic ring valve, shutters for automatic ring valves, and method for manufacturing said shutters
US-11293556-B2 · Apr 5, 2022 · US
Multi-function pressure regulation valve
US-11126208-B2 · Sep 21, 2021 · US
Reciprocating Gas Compressor Valve
US-2021262463-A1 · Aug 26, 2021 · US
Flow control device with drain check
US-2021146381-A1 · May 20, 2021 · US
Reciprocating compressor valve body made by additive manufacturing
US-11009017-B2 · May 18, 2021 · US
Reciprocating gas compressor valve
US-10941763-B2 · Mar 9, 2021 · US
Drain check in pressure regulator
US-10906052-B2 · Feb 2, 2021 · US
Valve device
US-2020408115-A1 · Dec 31, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/08?
- CPC F16K15/08 is the Cooperative Patent Classification code for “shaped as rings.”
- How many patents are filed under CPC F16K15/08 (shaped as rings)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/08 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).