External pressure fluid reservoir for storing energy
US-2025188958-A1 · Jun 12, 2025 · US
Housings
Housings · 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 | F15B2201/405 |
| Official title | Housings |
| Display label | Housings |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 10 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Accumulator for a chassis-level cooling system
US-2025159840-A1 · May 15, 2025 · US
Hydraulic Accumulator
US-2025092885-A1 · Mar 20, 2025 · US
Bellows accumulator
US-2024253415-A1 · Aug 1, 2024 · US
Shell member for accumulator, method of producing the same, accumulator, and method of producing the same
US-12018704-B2 · Jun 25, 2024 · US
Medical fluid therapy machine including pneumatic pump box and accumulators therefore
US-2024200546-A1 · Jun 20, 2024 · US
Medical fluid therapy machine including pneumatic pump box and accumulators therefore
US-11946466-B2 · Apr 2, 2024 · US
Spring dampening for accumulator system
US-2023287905-A1 · Sep 14, 2023 · US
Accumulator for a chassis-level cooling system
US-2023262928-A1 · Aug 17, 2023 · US
Accumulator on a fuel line of an aircraft
US-11691751-B2 · Jul 4, 2023 · US
Pressure compensation device designed for underwater applications
US-11674529-B2 · Jun 13, 2023 · US
Hydraulic accumulator
US-11598351-B2 · Mar 7, 2023 · US
Damping device
US-11480198-B2 · Oct 25, 2022 · US
Accumulator
US-11306745-B2 · Apr 19, 2022 · US
Pressure accumulator having a monitoring device
US-11268541-B2 · Mar 8, 2022 · US
Hydraulic lifting device for a chassis of a mobile device, chassis and mobile device
US-2021395056-A1 · Dec 23, 2021 · US
Method for producing pressure vessels
US-11092288-B2 · Aug 17, 2021 · US
Hydraulic accumulator
US-2021222708-A1 · Jul 22, 2021 · US
Pressure accumulator having a monitoring device
US-2021115948-A1 · Apr 22, 2021 · US
Accumulator
US-10927855-B2 · Feb 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B2201/405?
- CPC F15B2201/405 is the Cooperative Patent Classification code for “Housings.”
- How many patents are filed under CPC F15B2201/405 (Housings)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC F15B2201/405 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).