Control valve
US-2017342870-A1 · Nov 30, 2017 · 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 | F16K15/044 |
| Official title | {spring-loaded} |
| Display label | spring-loaded |
| Total patents | 307 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 16 |
| 2017 | 55 |
| 2018 | 37 |
| 2019 | 39 |
| 2020 | 33 |
| 2021 | 28 |
| 2022 | 28 |
| 2023 | 21 |
| 2024 | 13 |
| 2025 | 15 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adjustable stop for check valve
US-2017284550-A1 · Oct 5, 2017 · US
Cap unit for puncture repair
US-2017274605-A1 · Sep 28, 2017 · US
Adjustable stop for check valve
US-9732869-B2 · Aug 15, 2017 · US
Valve arrangement
US-9664167-B2 · May 30, 2017 · US
Check valve
US-2017146140-A1 · May 25, 2017 · US
Chain tensioner
US-2017138444-A1 · May 18, 2017 · US
Discharge Valve comprising a Receiving Element
US-2017138490-A1 · May 18, 2017 · US
Refillable dispensing systems and components
US-2017120274-A1 · May 4, 2017 · US
Quarter turn adapter connective outlet fitting for liquid color dispensing
US-9637283-B2 · May 2, 2017 · US
Valve arrangement
US-2017114912-A1 · Apr 27, 2017 · US
Tensioner
US-2017108093-A1 · Apr 20, 2017 · US
Beverage dispensing systems and methods
US-2017079469-A1 · Mar 23, 2017 · US
Electronic vaporiser system
US-2017042237-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017042241-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017042234-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017042239-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017043999-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017042224-A1 · Feb 16, 2017 · US
Electronic vaporiser system
US-2017042215-A1 · Feb 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/044?
- CPC F16K15/044 is the Cooperative Patent Classification code for “spring-loaded.”
- How many patents are filed under CPC F16K15/044 (spring-loaded)?
- Our database includes 307 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/044 growing?
- Publication counts under this code: 13 in 2024 vs 15 in 2025 (latest complete years).