Metal-supported material and ammonia synthesis catalyst
US-12577121-B2 · Mar 17, 2026 · US
Lanthanum oxides or hydroxides
Lanthanum oxides or hydroxides · 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 | C01F17/229 |
| Official title | Lanthanum oxides or hydroxides |
| Display label | Lanthanum oxides or hydroxides |
| Total patents | 60 |
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 | 3 |
| 2017 | 7 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 7 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for recovering rare-earth in cerium-based rare-earth polishing powder waste by two-step acid leaching gradient separation
US-12571071-B2 · Mar 10, 2026 · US
Lanthanum hydroxide /lanthanum oxide/calcium silicate/graphitic carbon nitride particulate crystalline nanocomposite
US-12486177-B1 · Dec 2, 2025 · US
Rotating liquid film reactor with gas-liquid concurrent and use thereof in preparation of metal hydroxides
US-2025360482-A1 · Nov 27, 2025 · US
Method for recovering solid state electrolyte from all-solid-state-battery
US-2025233222-A1 · Jul 17, 2025 · US
Carbon dioxide gas sensor
US-2024402122-A1 · Dec 5, 2024 · US
Method of producing garnet-type solid electrolytes
US-2024347765-A1 · Oct 17, 2024 · US
Carbon dioxide gas sensor
US-12099030-B2 · Sep 24, 2024 · US
Metal-Supported Material and Ammonia Synthesis Catalyst
US-2024116770-A1 · Apr 11, 2024 · US
Slurry with rare earth oxide particles
US-11912583-B2 · Feb 27, 2024 · US
Composite oxide, metal-supported material, and ammonia synthesis catalyst
US-11866342-B2 · Jan 9, 2024 · US
Substrate support cover for high-temperature corrosive environment
US-11866821-B2 · Jan 9, 2024 · US
Solvothermal synthesis of metal alkanoate and metal oxide nanoparticles
US-11773046-B2 · Oct 3, 2023 · US
method for recovering rare-earth in cerium-based rare-earth polishing powder waste by two-step acid leaching gradient separation
US-2023265541-A1 · Aug 24, 2023 · US
Monolithic rare earth oxide aerogels
US-11414598-B2 · Aug 16, 2022 · US
Method for preparing rare earth compound particles, rare earth oxide particles, and rare earth oxide particles-containing slurry
US-11292726-B2 · Apr 5, 2022 · US
Method for preparing rare earth compound particles, rare earth oxide particles, and rare earth oxide particles-containing slurry
US-2022055913-A1 · Feb 24, 2022 · US
Method for preparing rare earth compound particles, rare earth oxide particles, and rare earth oxide particles-containing slurry
US-2022055912-A1 · Feb 24, 2022 · US
Porous formed article, method for producing porous formed article, and production apparatus for porous formed article
US-11224854-B2 · Jan 18, 2022 · US
Solvothermal Synthesis of Metal Alkanoate and Metal Oxide Nanoparticles
US-2021347719-A1 · Nov 11, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F17/229?
- CPC C01F17/229 is the Cooperative Patent Classification code for “Lanthanum oxides or hydroxides.”
- How many patents are filed under CPC C01F17/229 (Lanthanum oxides or hydroxides)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC C01F17/229 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).