Chiral metal oxide nanostructure, and method for producing same
US-2025270361-A1 · Aug 28, 2025 · US
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Chromium trioxide; Chromic acid
Chromium trioxide; Chromic acid · 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 | C01G37/033 |
| Official title | Chromium trioxide; Chromic acid |
| Display label | Chromium trioxide; Chromic acid |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reducing agent and method for producing gas
US-2023146921-A1 · May 11, 2023 · US
Selective emitter for thermophotovoltaic power generator
US-10978988-B2 · Apr 13, 2021 · US
Selective emitter for thermophotovoltaic power generator
US-2020127596-A1 · Apr 23, 2020 · US
Mesoporous materials and processes for preparation thereof
US-10576462-B2 · Mar 3, 2020 · US
Preparation method of particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide
US-10105685-B2 · Oct 23, 2018 · US
Mesoporous materials and processes for preparation thereof
US-10046313-B2 · Aug 14, 2018 · US
Process for preparing chromium(III) oxide
US-9663383-B2 · May 30, 2017 · US
Preparation method of particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide
US-2017113207-A1 · Apr 27, 2017 · US
Process for preparing chromium(III) oxide
US-9580333-B2 · Feb 28, 2017 · US
Mesoporous materials and processes for preparation thereof
US-2016151768-A1 · Jun 2, 2016 · US
Mesoporous materials and processes for preparation thereof
US-2016151767-A1 · Jun 2, 2016 · US