Two-way pressure relief valve for blood reservoir
US-2021381612-A1 · Dec 9, 2021 · US
spring-loaded
spring-loaded · 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 | F16K17/196 |
| Official title | spring-loaded |
| Display label | spring-loaded |
| Total patents | 110 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 12 |
| 2017 | 5 |
| 2018 | 15 |
| 2019 | 10 |
| 2020 | 8 |
| 2021 | 11 |
| 2022 | 13 |
| 2023 | 7 |
| 2024 | 11 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel tank protector valve and engine systems having same
US-2020362799-A1 · Nov 19, 2020 · US
Control arm end
US-2020254841-A1 · Aug 13, 2020 · US
Sequence valve-mounted cylinder device
US-2020224783-A1 · Jul 16, 2020 · US
Fluid expansion tank
US-10690152-B1 · Jun 23, 2020 · US
Pressure cap for cooling system of vehicle
US-10619555-B2 · Apr 14, 2020 · US
Control line stabilizer for a pressure regulator
US-2020110429-A1 · Apr 9, 2020 · US
Fluid expansion tank
US-10557544-B1 · Feb 11, 2020 · US
Valve assembly
US-2020018408-A1 · Jan 16, 2020 · US
Fluid Control Valve
US-2019376473-A1 · Dec 12, 2019 · US
Self-regulating flow control device
US-10450833-B2 · Oct 22, 2019 · US
Displacement control valve
US-10337636-B2 · Jul 2, 2019 · US
Pressure regulator
US-10330211-B2 · Jun 25, 2019 · US
Check valve
US-10295074-B2 · May 21, 2019 · US
Relief valve and substrate processing apparatus
US-2019136994-A1 · May 9, 2019 · US
Flow control valve and fuel vapor processing apparatus incorporating the flow control valve
US-10280874-B2 · May 7, 2019 · US
Valve device
US-10221955-B2 · Mar 5, 2019 · US
Loop flushing valve
US-10197174-B1 · Feb 5, 2019 · US
Throttling device
US-10167979-B2 · Jan 1, 2019 · US
Dual action check valve with combined return and bypass passages
US-10144518-B2 · Dec 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K17/196?
- CPC F16K17/196 is the Cooperative Patent Classification code for “spring-loaded.”
- How many patents are filed under CPC F16K17/196 (spring-loaded)?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC F16K17/196 growing?
- Publication counts under this code: 11 in 2024 vs 8 in 2025 (latest complete years).