Steel material with good fatigue property in hydrogen and method for producing the same, and steel pipe and method for producing the same
US-2026098329-A1 · Apr 9, 2026 · US
Hydrogen absorbing
Hydrogen absorbing · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22C2202/04 |
| Official title | Hydrogen absorbing |
| Display label | Hydrogen absorbing |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 8 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method
US-12571068-B2 · Mar 10, 2026 · US
Structure and method of manufacturing the same
US-12558671-B2 · Feb 24, 2026 · US
Device for in-situ hydrogen absorption and hydrolysis hydrogen production based on magnesium-based solid hydrogen storage alloy and use thereof
US-2026001759-A1 · Jan 1, 2026 · US
Hydrogen-resistant material and hydrogen-resistant structural component
US-2025333818-A1 · Oct 30, 2025 · US
Steel sheet, member, and methods for producing same
US-2025313926-A1 · Oct 9, 2025 · US
Steel sheet, member, and methods for producing same
US-2025290186-A1 · Sep 18, 2025 · US
Hydrogen storage alloys
US-2025188571-A1 · Jun 12, 2025 · US
Structural vehicle components for hydrogen storage
US-12325073-B2 · Jun 10, 2025 · US
Heat-generating material, and heat-generating system and method of supplying heat using the same
US-2025162862-A1 · May 22, 2025 · US
Hydrogen storage alloy, hydrogen occluding method, hydrogen releasing method, and power generating system
US-2025084507-A1 · Mar 13, 2025 · US
Magnesium-based composite material and method of forming the same
US-2025075294-A1 · Mar 6, 2025 · US
Surface treatment method and device for hydrogen absorbing alloy powder
US-12134129-B2 · Nov 5, 2024 · US
Austenitic stainless steel for high-pressure hydrogen gas or liquid hydrogen, and manufacturing method therefor
US-2024247331-A1 · Jul 25, 2024 · US
Hydrogen storage alloy
US-2024222610-A1 · Jul 4, 2024 · US
Hydrogen storage alloy for alkaline storage battery and alkaline storage battery using the same
US-12024757-B2 · Jul 2, 2024 · US
Preparation method of a rare earth anisotropic bonded magnetic powder
US-11987868-B2 · May 21, 2024 · US
Novel nickel foam having hierarchical pore structure, method of producing the same, and application thereof
US-2024124992-A1 · Apr 18, 2024 · US
AB5-based hydrogen storage alloy, electrode for Ni-MH battery, secondary battery, and preparation method of hydrogen storage alloy
US-11929488-B2 · Mar 12, 2024 · US
Hydrogen absorbing alloy, negative electrode comprising same and nickel-metal hydride secondary battery comprising same
US-11817573-B2 · Nov 14, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C2202/04?
- CPC C22C2202/04 is the Cooperative Patent Classification code for “Hydrogen absorbing.”
- How many patents are filed under CPC C22C2202/04 (Hydrogen absorbing)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC C22C2202/04 growing?
- Publication counts under this code: 7 in 2024 vs 8 in 2025 (latest complete years).