Continuous process for sustainable production of hydrogen
US-12391547-B2 · Aug 19, 2025 · US
Oxides
Oxides · 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 | C01D1/02 |
| Official title | Oxides |
| Display label | Oxides |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 8 |
| 2017 | 9 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sodium-based Cation-Disordered Rock Salts for High-Performance Na-Ion Battery Cathodes
US-2025197232-A1 · Jun 19, 2025 · US
Small modular nuclear reactor integrated energy systems for capturing atmospheric carbon dioxide using sodium hydroxide
US-2024246023-A1 · Jul 25, 2024 · US
Thixotropically Molded Product, Thixotropic Molding Material, And Method Of Producing Thixotropic Molding Material
US-2024217813-A1 · Jul 4, 2024 · US
Reducing agent and method for producing gas
US-2023146921-A1 · May 11, 2023 · US
Nitrate process for manufacturing transition metal hydroxide precursors
US-11401167-B2 · Aug 2, 2022 · US
Lithium oxide recovery method from lithium manganese oxide (lmo)
US-2022194806-A1 · Jun 23, 2022 · US
Method of stabilizing imino-functional silane
US-11230563-B2 · Jan 25, 2022 · US
A continuous process for sustainable production of hydrogen
US-2021261407-A1 · Aug 26, 2021 · US
Method of preparing metal oxide-silica composite aerogel and metal oxide-silica composite aerogel prepared by using the same
US-10941043-B2 · Mar 9, 2021 · US
Sodium-based electrode active material and secondary battery comprising same
US-10938029-B2 · Mar 2, 2021 · US
Process for the synthesis of IZM-2 zeolite in the presence of a template, 1,6-bis(methylpiperidinium)hexane dihydroxide
US-10865116-B2 · Dec 15, 2020 · US
Nitrate process for manufacturing transition metal hydroxide precursors
US-2020031682-A1 · Jan 30, 2020 · US
Method of stabilizing imino-functional silane
US-2020010490-A1 · Jan 9, 2020 · US
Method for preparing metal/molybdenum oxide nanoparticles
US-10529460-B2 · Jan 7, 2020 · US
Positive electrode active material and rechargeable battery including the same
US-10505192-B2 · Dec 10, 2019 · US
Method of stabilizing imino-functional silane
US-10457697-B2 · Oct 29, 2019 · US
Sodium-based electrode active material and secondary battery comprising same
US-2019207213-A1 · Jul 4, 2019 · US
Method for preparing metal/molybdenum oxide nanoparticles
US-2019071320-A1 · Mar 7, 2019 · US
Process for the synthesis of izm-2 zeolite in the presence of a template, 1,6-bis(methylpiperidinium)hexane dihydroxide
US-2018273391-A1 · Sep 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01D1/02?
- CPC C01D1/02 is the Cooperative Patent Classification code for “Oxides.”
- How many patents are filed under CPC C01D1/02 (Oxides)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC C01D1/02 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).