Liquid drainage mechanism, battery box, battery and electrical apparatus
US-2025279563-A1 · Sep 4, 2025 · US
actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24)
actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24) · 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 | F16K31/001 |
| Official title | {actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24)} |
| Display label | actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24) |
| Total patents | 42 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cover member and thermostat device equipped with cover member
US-12404944-B2 · Sep 2, 2025 · US
Valve assembly for an irrigation system
US-12342767-B2 · Jul 1, 2025 · US
A valve assembly for an irrigation system
US-2025160270-A1 · May 22, 2025 · US
Liquid discharge mechanism, battery box, battery, and electric apparatus
US-2025125511-A1 · Apr 17, 2025 · US
Automatic reset flood valve
US-12196330-B2 · Jan 14, 2025 · US
Automatic drain valve, battery, and electric apparatus
US-2024392886-A1 · Nov 28, 2024 · US
Valve unit
US-12152528-B2 · Nov 26, 2024 · US
Cover member and thermostat device equipped with cover member
US-2024271714-A1 · Aug 15, 2024 · US
Thermo-valve and thermo-valve connecting body
US-11982220-B2 · May 14, 2024 · US
Mechanically actuated valve assemblies
US-11952753-B2 · Apr 9, 2024 · US
Heater member for thermostat and manufacturing method therefor
US-2024026810-A1 · Jan 25, 2024 · US
Thermo-valve and thermo-valve connecting body
US-2023383690-A1 · Nov 30, 2023 · US
Valve assemblies for leak prevention
US-11697927-B2 · Jul 11, 2023 · US
Valve unit
US-2023129691-A1 · Apr 27, 2023 · US
Valve assembly and housing comprising the same
US-11603942-B2 · Mar 14, 2023 · US
Steam valve driving apparatus
US-11428246-B2 · Aug 30, 2022 · US
Mechanically actuated valve assemblies
US-2022064916-A1 · Mar 3, 2022 · US
Valve assembly and housing comprising the same
US-2022042613-A1 · Feb 10, 2022 · US
Valve assemblies for leak prevention
US-2021372093-A1 · Dec 2, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K31/001?
- CPC F16K31/001 is the Cooperative Patent Classification code for “actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24).”
- How many patents are filed under CPC F16K31/001 (actuated by volume variations caused by an element soluble in a fluid or swelling in contact with a fluid (life-boats B63C9/24))?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC F16K31/001 growing?
- Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).