Fluid compression apparatus and method
US-12553421-B2 · Feb 17, 2026 · US
Hydrogen
Hydrogen · 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 | F04B2015/0822 |
| Official title | {Hydrogen} |
| Display label | Hydrogen |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 11 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compression device and method
US-12553423-B2 · Feb 17, 2026 · US
Cylinder in particular for hydrogen tank cycling facility
US-12546296-B2 · Feb 10, 2026 · US
Pump arrangement for providing a saturated liquid
US-12535061-B2 · Jan 27, 2026 · US
Pressure boosting pump and hydrogen supply system
US-2025383047-A1 · Dec 18, 2025 · US
Fluid compression apparatus and method
US-12486835-B2 · Dec 2, 2025 · US
Pumping device, plant and method for supplying liquid hydrogen
US-12473899-B2 · Nov 18, 2025 · US
Cryogenic pump for hydrogen fueling station
US-2025320862-A1 · Oct 16, 2025 · US
Cryogenic pump with inverse orientation for hydrogen fueling station
US-2025320110-A1 · Oct 16, 2025 · US
Cryogenic pump with designed leakby for hydrogen fueling station
US-2025320855-A1 · Oct 16, 2025 · US
Cryogenic pump for hydrogen fueling station with long stroke
US-2025320109-A1 · Oct 16, 2025 · US
Purge apparatus and purge method
US-12429058-B2 · Sep 30, 2025 · US
Fluid compression apparatus and method
US-2025237201-A1 · Jul 24, 2025 · US
Fluid compression apparatus and method
US-2025237205-A1 · Jul 24, 2025 · US
Installation for pumping cryogenic fluid and filling station comprising such an installation
US-12331889-B2 · Jun 17, 2025 · US
Fluid compression apparatus and filling station
US-2025026627-A1 · Jan 23, 2025 · US
Purge apparatus and purge method
US-2024360832-A1 · Oct 31, 2024 · US
Elevating apparatus, pump carrying-in method, pump pulling-up method
US-2024344529-A1 · Oct 17, 2024 · US
Hydrogen tank cycling facility
US-2024328916-A1 · Oct 3, 2024 · US
Cylinder in particular for hydrogen tank cycling facility
US-2024328439-A1 · Oct 3, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B2015/0822?
- CPC F04B2015/0822 is the Cooperative Patent Classification code for “Hydrogen.”
- How many patents are filed under CPC F04B2015/0822 (Hydrogen)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC F04B2015/0822 growing?
- Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).