Systems and methods for determining valve flutter
US-12480598-B2 · Nov 25, 2025 · US
the hinge being flexible
the hinge being flexible · 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 | F16K15/031 |
| Official title | {the hinge being flexible} |
| Display label | the hinge being flexible |
| Total patents | 57 |
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 | 5 |
| 2016 | 5 |
| 2017 | 12 |
| 2018 | 4 |
| 2019 | 11 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for determining valve flutter
US-2025122951-A1 · Apr 17, 2025 · US
Valve device
US-2024052940-A1 · Feb 15, 2024 · US
Vent and aav arrangement for patient interface
US-2023405254-A1 · Dec 21, 2023 · US
Valve with valve body, and crankcase ventilation device
US-11828212-B2 · Nov 28, 2023 · US
Valve unit, filter head for a valve unit, and filter system
US-11649904-B2 · May 16, 2023 · US
Valve Unit, Filter Head for a Valve Unit, and Filter System
US-2022282796-A1 · Sep 8, 2022 · US
Flap-cushioning pressure relief assembly
US-11400794-B2 · Aug 2, 2022 · US
Clothes treatment apparatus and control method therefor
US-11299840-B2 · Apr 12, 2022 · US
Check valve assembly
US-11293558-B2 · Apr 5, 2022 · US
Directional valve, especially for breathing gases, and method for manufacturing same
US-11199273-B2 · Dec 14, 2021 · US
Pneumatic ABS valve device
US-11186264-B2 · Nov 30, 2021 · US
Valve with Valve Body, and Crankcase Ventilation Device
US-2021363902-A1 · Nov 25, 2021 · US
Ventilation flow rate regulator for a pressurised tank of a vehicle
US-11155158-B2 · Oct 26, 2021 · US
Pneumatic abs valve device
US-2021129820-A1 · May 6, 2021 · US
Fluid coupling member including valve member
US-10737052-B2 · Aug 11, 2020 · US
Clothes treatment apparatus and control method therefor
US-2020181827-A1 · Jun 11, 2020 · US
Directional valve, especially for breathing gases, and method for manufacturing same
US-2020173568-A1 · Jun 4, 2020 · US
Directional valve, especially for breathing gases, and method for manufacturing same
US-10670158-B2 · Jun 2, 2020 · US
Noise-dampening pressure relief valve
US-10663084-B2 · May 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/031?
- CPC F16K15/031 is the Cooperative Patent Classification code for “the hinge being flexible.”
- How many patents are filed under CPC F16K15/031 (the hinge being flexible)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/031 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).