Bellows Accumulator
US-2025305520-A1 · Oct 2, 2025 · US
having valve means
having valve means · 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 | F15B2201/411 |
| Official title | having valve means |
| Display label | having valve means |
| Total patents | 64 |
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 | 3 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pressure pulse generation
US-2025155089-A1 · May 15, 2025 · US
Eha accumulator refilling arrangement
US-2025121931-A1 · Apr 17, 2025 · US
Piston Accumulator
US-2025003428-A1 · Jan 2, 2025 · US
Dual Mode Force Control for Surface Engaging Machinery
US-2024392810-A1 · Nov 28, 2024 · US
Adaptive repressurizer
US-2024392809-A1 · Nov 28, 2024 · US
Mechanism for regulating high pressure industrial air using double layer electromagnetic valves
US-2024360845-A1 · Oct 31, 2024 · US
Hydraulic circuit including hydraulic decompression energy reclamation
US-12055167-B2 · Aug 6, 2024 · US
Bellows accumulator
US-2024253415-A1 · Aug 1, 2024 · US
System, valve assembly, and methods for oscillation control of a hydraulic machine
US-11781573-B2 · Oct 10, 2023 · US
Hydraulic pressure control unit
US-2023256946-A1 · Aug 17, 2023 · US
Piston accumulator
US-2023090796-A1 · Mar 23, 2023 · US
Hydraulic machine
US-11598354-B2 · Mar 7, 2023 · US
Hydraulic machine
US-11542684-B2 · Jan 3, 2023 · US
Piston accumulator
US-11542962-B2 · Jan 3, 2023 · US
Hydraulic machine
US-2022364327-A1 · Nov 17, 2022 · US
Hydraulic machine
US-2022364328-A1 · Nov 17, 2022 · US
Autonomous actuator and refilling thereof
US-2022196037-A1 · Jun 23, 2022 · US
Hydraulic Circuit including Hydraulic Decompression Energy Reclamation
US-2022136535-A1 · May 5, 2022 · US
Hydraulic system for working machine
US-11306746-B2 · Apr 19, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B2201/411?
- CPC F15B2201/411 is the Cooperative Patent Classification code for “having valve means.”
- How many patents are filed under CPC F15B2201/411 (having valve means)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC F15B2201/411 growing?
- Publication counts under this code: 5 in 2024 vs 8 in 2025 (latest complete years).