RFeB-BASED MAGNET AND METHOD FOR PRODUCING RFeB-BASED MAGNET
US-2018374617-A1 · Dec 27, 2018 · US
Hydrogen
Hydrogen · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B22F2201/013 |
| Official title | Hydrogen |
| Display label | Hydrogen |
| Total patents | 230 |
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 | 7 |
| 2016 | 24 |
| 2017 | 19 |
| 2018 | 18 |
| 2019 | 20 |
| 2020 | 30 |
| 2021 | 34 |
| 2022 | 19 |
| 2023 | 21 |
| 2024 | 23 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Porous materials via freeze-casting of metal salt solutions
US-2018354030-A1 · Dec 13, 2018 · US
Laminate and method of manufacturing laminate
US-2018315680-A1 · Nov 1, 2018 · US
Composite magnetic material and motor
US-2018301255-A1 · Oct 18, 2018 · US
Method for producing nickel powder
US-10092955-B2 · Oct 9, 2018 · US
Porous materials via freeze-casting of metal salt solutions
US-10086431-B2 · Oct 2, 2018 · US
Method for fabricating metal foams having ligament diameters below one micron
US-10071425-B2 · Sep 11, 2018 · US
Spark plasma sintered polycrystalline diamond
US-2018208511-A1 · Jul 26, 2018 · US
Article for magnetic heat exchange and method of manufacturing the same
US-9895748-B2 · Feb 20, 2018 · US
Rare earth permanent magnetic powder, bonded magnet and device using the bonded magnet
US-9859042-B2 · Jan 2, 2018 · US
Bi-material strip and a method of bonding strips of different materials together
US-9844836-B2 · Dec 19, 2017 · US
Powder metallurgy methods for the production of fine and ultrafine grain Ti and Ti alloys
US-9816157-B2 · Nov 14, 2017 · US
Finish heat treatment method and finish heat treatment apparatus for iron powder
US-9815115-B2 · Nov 14, 2017 · US
Sputtering Target Comprising Al-Te-Cu-Zr-Based Alloy and Method of Manufacturing Same
US-2017306473-A1 · Oct 26, 2017 · US
Additive manufacturing methods
US-9796137-B2 · Oct 24, 2017 · US
Article for magnetic heat exchange and method of fabricating an article for magnetic heat exchange
US-9773591-B2 · Sep 26, 2017 · US
Porous copper sintered material, porous copper composite part, method of producing porous copper sintered material, and method of producing porous copper composite part
US-2017239729-A1 · Aug 24, 2017 · US
Method for the production of active palladium(0) powder
US-2017240498-A1 · Aug 24, 2017 · US
Method for producing seed crystals used for producing hydrogen-reduced nickel powder
US-9700942-B2 · Jul 11, 2017 · US
Chemically stable ceramic-metal composite membrane for hydrogen separation
US-9687775-B2 · Jun 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B22F2201/013?
- CPC B22F2201/013 is the Cooperative Patent Classification code for “Hydrogen.”
- How many patents are filed under CPC B22F2201/013 (Hydrogen)?
- Our database includes 230 publications tagged with this CPC code.
- Is patent activity under CPC B22F2201/013 growing?
- Publication counts under this code: 23 in 2024 vs 12 in 2025 (latest complete years).