Method
US-2026092610-A1 · Apr 2, 2026 · US
the flexible separating means being diaphragms or membranes
the flexible separating means being diaphragms or membranes · 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 | F15B2201/3151 |
| Official title | the flexible separating means being diaphragms or membranes |
| Display label | the flexible separating means being diaphragms or membranes |
| Total patents | 60 |
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 | 6 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow-through folding membrane accumulator for liquid cooling system
US-12593423-B2 · Mar 31, 2026 · US
Separator and Hydraulic Accumulator Having Such a Separator
US-2025389283-A1 · Dec 25, 2025 · US
Method for checking the state of a hydraulic accumulator
US-2025320882-A1 · Oct 16, 2025 · US
Hydraulic accumulator
US-12331760-B2 · Jun 17, 2025 · US
Flow-through folding membrane accumulator for liquid cooling system
US-2025133695-A1 · Apr 24, 2025 · US
Hydraulic Accumulator
US-2024318669-A1 · Sep 26, 2024 · US
Hydraulic integrated control module, hydraulic suspension system having hydraulic integrated control module, and vehicle
US-2024308292-A1 · Sep 19, 2024 · US
Rock breaking machine and method for storing pressure energy
US-12083663-B2 · Sep 10, 2024 · US
Hydraulic Accumulator
US-2024110580-A1 · Apr 4, 2024 · US
Three-dimensional monolithic diaphragm tank
US-11920542-B2 · Mar 5, 2024 · US
Hydraulic Accumulator
US-2024035490-A1 · Feb 1, 2024 · US
Separator element
US-2023375010-A1 · Nov 23, 2023 · US
Brake system damping device
US-11680619-B2 · Jun 20, 2023 · US
Pressure compensation device designed for underwater applications
US-11674529-B2 · Jun 13, 2023 · US
Disposable Alternating Tangential Flow Filtration Units
US-2023093783-A9 · Mar 23, 2023 · US
Rock breaking machine and method for storing pressure energy
US-2023069735-A1 · Mar 2, 2023 · US
Damping device
US-11480198-B2 · Oct 25, 2022 · US
Hydraulic actuator
US-2022213906-A1 · Jul 7, 2022 · US
Fiberwound tanks
US-11231143-B2 · Jan 25, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B2201/3151?
- CPC F15B2201/3151 is the Cooperative Patent Classification code for “the flexible separating means being diaphragms or membranes.”
- How many patents are filed under CPC F15B2201/3151 (the flexible separating means being diaphragms or membranes)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC F15B2201/3151 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).