Carbon dioxide gas sensor
US-2020393431-A1 · Dec 17, 2020 · US
Oxides or hydroxides of lanthanides
Oxides or hydroxides of lanthanides · 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 | C01F17/224 |
| Official title | Oxides or hydroxides of lanthanides |
| Display label | Oxides or hydroxides of lanthanides |
| Total patents | 103 |
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 | 10 |
| 2017 | 10 |
| 2018 | 16 |
| 2019 | 10 |
| 2020 | 13 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lithium-iron-manganese-based composite oxide and lithium-ion secondary battery using same
US-10847788-B2 · Nov 24, 2020 · US
Method for producing nanocrystals and nanocrystal production device
US-10640882-B2 · May 5, 2020 · US
Method for producing transparent ceramic, transparent ceramic, magneto-optical device and rare earth oxide powder for sintering
US-10642073-B2 · May 5, 2020 · US
Polymer templated nanowire catalysts
US-2020109094-A1 · Apr 9, 2020 · US
Method for preparing rare earth compound particles, rare earth oxide particles, and rare earth oxide particles-containing slurry
US-2020071180-A1 · Mar 5, 2020 · US
Exhaust gas purifying catalyst
US-10576420-B2 · Mar 3, 2020 · US
Nano-inhibitors
US-10472556-B2 · Nov 12, 2019 · US
Ozone-Mediated Synthesis of Nanostructures
US-2019315629-A1 · Oct 17, 2019 · US
Ceramic powder, method of manufacturing ceramic powder, and method of manufacturing ceramic object using the ceramic powder
US-2019300441-A1 · Oct 3, 2019 · US
Monolithic rare earth oxide aerogels
US-2019211264-A1 · Jul 11, 2019 · US
Method for producing transparent ceramic,transparent ceramic, magneto-optical device and rare earth oxide powder for sintering
US-2019212585-A1 · Jul 11, 2019 · US
Monolithic rare earth oxide aerogels
US-10336937-B2 · Jul 2, 2019 · US
Highly pure powder intended for thermal spraying
US-10252919-B2 · Apr 9, 2019 · US
Production of ethylene with nanowire catalysts
US-10195603-B2 · Feb 5, 2019 · US
Method for producing nanocrystals and nanocrystal production device
US-2019032241-A1 · Jan 31, 2019 · US
Faraday rotators of terbium oxyhydroxide
US-2019018265-A1 · Jan 17, 2019 · US
Porous Formed Article, Method for Producing Porous Formed Article, and Production Apparatus for Porous Formed Article
US-2018369781-A1 · Dec 27, 2018 · US
Method for producing metal oxide nanocrystals, method for producing multi-element oxide nanocrystals, and metal oxide nanocrystals
US-2018371638-A1 · Dec 27, 2018 · US
Exhaust gas purifying catalyst
US-10143968-B2 · Dec 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F17/224?
- CPC C01F17/224 is the Cooperative Patent Classification code for “Oxides or hydroxides of lanthanides.”
- How many patents are filed under CPC C01F17/224 (Oxides or hydroxides of lanthanides)?
- Our database includes 103 publications tagged with this CPC code.
- Is patent activity under CPC C01F17/224 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).