Method for producing aluminum nitride powder, aluminum nitride powder, and package
US-12486171-B2 · Dec 2, 2025 · US
Preparation by direct nitridation of aluminium
Preparation by direct nitridation of aluminium · 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 | C01B21/0722 |
| Official title | {Preparation by direct nitridation of aluminium} |
| Display label | Preparation by direct nitridation of aluminium |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aluminum nitride plate
US-12415728-B2 · Sep 16, 2025 · US
AlN crystal preparation method, AlN crystals, and organic compound including AlN crystals
US-12365823-B2 · Jul 22, 2025 · US
Method for preparing aluminum nitride powder
US-2025187917-A1 · Jun 12, 2025 · US
Aluminum nitride-based powder and method for producing same
US-12281010-B2 · Apr 22, 2025 · US
Apparatus for producing aln whiskers
US-2024190776-A1 · Jun 13, 2024 · US
Method and apparatus for producing AlN whiskers, AlN whisker bodies, AlN whiskers, resin molded body, and method for producing resin molded body
US-11939267-B2 · Mar 26, 2024 · US
Method for Producing Aluminum Nitride Powder, Aluminum Nitride Powder, and Package
US-2023137083-A1 · May 4, 2023 · US
Method for producing metal nitride
US-2022411267-A1 · Dec 29, 2022 · US
Method and apparatus for producing aln whiskers , aln whisker bodies, aln whiskers, resin molded body, and method for producing resin molded body
US-2022259108-A1 · Aug 18, 2022 · US
Aluminum nitride plate
US-11383981-B2 · Jul 12, 2022 · US
Method and apparatus for producing AlN whiskers, AlN whisker bodies, AlN whiskers, resin molded body, and method for producing resin molded body
US-11345640-B2 · May 31, 2022 · US
Process that can withstand high currents, for producing ammonia
US-2021285113-A1 · Sep 16, 2021 · US
Aln crystal preparation method, aln crystals, and organic compound including aln crystals
US-2021009885-A1 · Jan 14, 2021 · US
Aluminum nitride plate
US-2021009418-A1 · Jan 14, 2021 · US
Aluminum nitride plate
US-2021002138-A1 · Jan 7, 2021 · US
Aluminum nitrade-based powder and method for producing same
US-2020140276-A1 · May 7, 2020 · US
Method and apparatus for producing aln whiskers, aln whisker bodies, aln whiskers, resin molded body, and method for producing resin molded body
US-2020095170-A1 · Mar 26, 2020 · US
Method for preparing aluminum nitride
US-10112833-B2 · Oct 30, 2018 · US
Molten iron-assisted method for producing aluminum nitride and device thereof
US-10106414-B2 · Oct 23, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B21/0722?
- CPC C01B21/0722 is the Cooperative Patent Classification code for “Preparation by direct nitridation of aluminium.”
- How many patents are filed under CPC C01B21/0722 (Preparation by direct nitridation of aluminium)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC C01B21/0722 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).