Molten metal dispensing systems and methods for additive manufacturing in space
US-2026061495-A1 · Mar 5, 2026 · US
By filtering (filtration of aluminium C22B21/066)
By filtering (filtration of aluminium C22B21/066) · 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 | C22B9/023 |
| Official title | {By filtering (filtration of aluminium C22B21/066)} |
| Display label | By filtering (filtration of aluminium C22B21/066) |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 9 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of refining metal and method of fabricating positive electrode active material using the same
US-2025270673-A1 · Aug 28, 2025 · US
Molten metal filter device for casting vehicle components
US-12280421-B2 · Apr 22, 2025 · US
Molten metal filter device for casting vehicle components
US-2024424551-A1 · Dec 26, 2024 · US
Electromagnetic priming of molten metal filters
US-12059643-B2 · Aug 13, 2024 · US
Liquid lithium supply and regulation
US-2024253968-A1 · Aug 1, 2024 · US
High pressure filter apparatus with external sleeve and related methods
US-2024226785-A9 · Jul 11, 2024 · US
Process for recovering metals from recycled rechargeable batteries
US-12000014-B2 · Jun 4, 2024 · US
Molten metal filter
US-2024165696-A1 · May 23, 2024 · US
Liquid lithium supply and regulation
US-11987489-B2 · May 21, 2024 · US
High pressure filter apparatus with external sleeve and related methods
US-2024131458-A1 · Apr 25, 2024 · US
Method for regenerating copper-containing aluminum alloy from aluminum alloy scrap
US-11939644-B2 · Mar 26, 2024 · US
Filter handling tool
US-2023304124-A1 · Sep 28, 2023 · US
Liquid lithium supply and regulation
US-2023211998-A1 · Jul 6, 2023 · US
Filter handling tool
US-11674198-B2 · Jun 13, 2023 · US
Liquid lithium supply and regulation
US-11603306-B2 · Mar 14, 2023 · US
High pressure filter
US-11433338-B2 · Sep 6, 2022 · US
Spinel-reinforced magnesium oxide-based foam ceramic filter and preparation method therefor
US-11358081-B2 · Jun 14, 2022 · US
Liquid lithium supply and regulation
US-2022089429-A1 · Mar 24, 2022 · US
Electromagnetic priming of molten metal filters
US-2022040612-A1 · Feb 10, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B9/023?
- CPC C22B9/023 is the Cooperative Patent Classification code for “By filtering (filtration of aluminium C22B21/066).”
- How many patents are filed under CPC C22B9/023 (By filtering (filtration of aluminium C22B21/066))?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C22B9/023 growing?
- Publication counts under this code: 9 in 2024 vs 2 in 2025 (latest complete years).