Vacuum valve with optical sensor
US-10520109-B2 · Dec 31, 2019 · US
with pivoted closure members
with pivoted closure members · 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 | F16K3/04 |
| Official title | with pivoted closure members |
| Display label | with pivoted closure members |
| Total patents | 115 |
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 | 8 |
| 2016 | 14 |
| 2017 | 7 |
| 2018 | 20 |
| 2019 | 23 |
| 2020 | 15 |
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid Valve Having a Coating Containing Gold and/or Platinum
US-2019390788-A1 · Dec 26, 2019 · US
Optimized pressure regulation for and with a vacuum valve
US-10509423-B2 · Dec 17, 2019 · US
Electronic cigarette and atomizer device thereof
US-10433590-B2 · Oct 8, 2019 · US
Target opening degree estimator and pressure adjustment vacuum valve
US-2019293201-A1 · Sep 26, 2019 · US
Valve apparatus and air conditioning apparatus
US-10422433-B2 · Sep 24, 2019 · US
Method and apparatus for controlling a waste outlet of a toilet
US-2019277014-A1 · Sep 12, 2019 · US
Four-way valve for switching refrigerant channel
US-2019257436-A1 · Aug 22, 2019 · US
Electronic cigarette and atomizer device thereof
US-10306929-B2 · Jun 4, 2019 · US
Aircraft vacuum toilet system splashguard
US-10301805-B2 · May 28, 2019 · US
Method and apparatus for controlling a waste outlet of a toilet
US-10202747-B2 · Feb 12, 2019 · US
Valve structure of shock absorber
US-2018340589-A1 · Nov 29, 2018 · US
Method and apparatus for controlling a waste outlet of a toilet
US-2018292022-A1 · Oct 11, 2018 · US
Valve apparatus and air conditioning apparatus
US-2018283565-A1 · Oct 4, 2018 · US
Gate valves and airlocks for a transportation system
US-10088061-B2 · Oct 2, 2018 · US
Vacuum valve with optical sensor
US-2018259075-A1 · Sep 13, 2018 · US
Optimized pressure regulation for and with a vacuum valve
US-2018259983-A1 · Sep 13, 2018 · US
Method and apparatus for installation of a toilet system on an aircraft
US-10041241-B2 · Aug 7, 2018 · US
Vacuum valve, vacuum pump, and vacuum pumping system
US-2018195518-A1 · Jul 12, 2018 · US
Vacuum valve
US-2018195639-A1 · Jul 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K3/04?
- CPC F16K3/04 is the Cooperative Patent Classification code for “with pivoted closure members.”
- How many patents are filed under CPC F16K3/04 (with pivoted closure members)?
- Our database includes 115 publications tagged with this CPC code.
- Is patent activity under CPC F16K3/04 growing?
- Publication counts under this code: 5 in 2024 vs 2 in 2025 (latest complete years).