Variable-flow-path air valve for water hammer prevention and a design method
US-11846379-B2 · Dec 19, 2023 · US
actuating a lift valve
actuating a lift valve · 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 | F16K31/20 |
| Official title | actuating a lift valve |
| Display label | actuating a lift valve |
| Total patents | 79 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 14 |
| 2019 | 5 |
| 2020 | 11 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 10 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dishwasher and water jacket included in same
US-2023172422-A1 · Jun 8, 2023 · US
Variable-flow-path air valve for water hammer prevention and a design method
US-2023160515-A1 · May 25, 2023 · US
Fill-up restriction valve
US-2023144508-A1 · May 11, 2023 · US
Indoor unit for an air conditioner
US-2022404042-A1 · Dec 22, 2022 · US
Ventilation control valve for fuel tank
US-11511620-B2 · Nov 29, 2022 · US
Siphon activated valve
US-11434631-B2 · Sep 6, 2022 · US
Discharge valve unit and fluid device
US-2022146013-A1 · May 12, 2022 · US
Shut off valves and components thereof for ecology fuel return systems
US-2022042459-A1 · Feb 10, 2022 · US
Shut off valves and components thereof for ecology fuel return systems
US-11174791-B2 · Nov 16, 2021 · US
Condensate trap
US-2021318029-A1 · Oct 14, 2021 · US
Indoor unit for an air conditioner
US-2021222895-A1 · Jul 22, 2021 · US
Fuel valve
US-10946737-B2 · Mar 16, 2021 · US
Fuel shut-off valve
US-10919380-B2 · Feb 16, 2021 · US
Valve device for fuel tank
US-10913650-B2 · Feb 9, 2021 · US
Siphon activated valve
US-2021002879-A1 · Jan 7, 2021 · US
Manifold assembly with integrated vent and flow control ports
US-10864990-B2 · Dec 15, 2020 · US
Valve cartridge assembly
US-2020347940-A1 · Nov 5, 2020 · US
Ventilation control valve for fuel tank
US-2020331341-A1 · Oct 22, 2020 · US
Siphon activated valve
US-10774512-B2 · Sep 15, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K31/20?
- CPC F16K31/20 is the Cooperative Patent Classification code for “actuating a lift valve.”
- How many patents are filed under CPC F16K31/20 (actuating a lift valve)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC F16K31/20 growing?
- Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).