Coated calcium carbonate for pitch and/or stickies control
US-2023323601-A1 · Oct 12, 2023 · US
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Chromium oxides
Chromium 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 | C09C1/346 |
| Official title | {Chromium oxides} |
| Display label | Chromium oxides |
| Total patents | 21 |
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 | 1 |
| 2017 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Inorganic particulate material suitable for use in polymeric films
US-11639441-B2 · May 2, 2023 · US
Porous metal oxide microspheres with varying pore sizes
US-2023031067-A1 · Feb 2, 2023 · US
Porous metal oxide microspheres with varying pore sizes
US-11471849-B2 · Oct 18, 2022 · US
Pigments containing cellulose
US-2022251393-A1 · Aug 11, 2022 · US
Ceramic colours
US-11261333-B2 · Mar 1, 2022 · US
Method of forming porous metal oxide microspheres using polydisperse polymer nanospheres
US-11185835-B2 · Nov 30, 2021 · US
Modified black spinel pigments for glass and ceramic enamel applications
US-11174170-B2 · Nov 16, 2021 · US
Porous metal oxide microspheres with varying pore sizes
US-2021220792-A1 · Jul 22, 2021 · US
Modified Black Spinel Pigments For Glass And Ceramic Enamel Applications
US-2021198119-A1 · Jul 1, 2021 · US
Process for manufacturing omniphobic cosmetic pigments
US-11040000-B2 · Jun 22, 2021 · US
Pigment mixture
US-2021145711-A1 · May 20, 2021 · US
Process for manufacturing omniphobic cosmetic pigments
US-2020155441-A1 · May 21, 2020 · US
Ceramic colours
US-2019338134-A1 · Nov 7, 2019 · US
Microspheres Comprising Polydisperse Polymer Nanospheres and Porous Metal Oxide Microspheres
US-2019076810-A1 · Mar 14, 2019 · US
Pigment mixture
US-2017290750-A1 · Oct 12, 2017 · US
Process for preparing chromium(III) oxide
US-9663383-B2 · May 30, 2017 · US
Process for preparing chromium(III) oxide
US-9580333-B2 · Feb 28, 2017 · US
Preparation method of carbon modified filler
US-9382429-B2 · Jul 5, 2016 · US
Uv absorbers on pigments
US-2015218336-A1 · Aug 6, 2015 · US