Spherical composite particles of barium sulfate and silica, and production method therefor
US-2025205123-A1 · Jun 26, 2025 · US
Drying, calcination
Drying, calcination · 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 | C09C3/043 |
| Official title | {Drying, calcination} |
| Display label | Drying, calcination |
| Total patents | 68 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 10 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 8 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Zinc oxide powder, liquid dispersion, coating material, and cosmetic
US-2025197239-A1 · Jun 19, 2025 · US
Process for producing a white UV-absorbing surface-reacted calcium carbonate doped with a titanium species, a white UV-absorbing surface-reacted calcium carbonate and use thereof
US-2025179301-A1 · Jun 5, 2025 · US
Reducing hygroscopicity of a mineral material
US-12234360-B2 · Feb 25, 2025 · US
Calcium carbonate-comprising material with high bio-based carbon content for polymer formulations
US-2025051539-A1 · Feb 13, 2025 · US
Ultrafine modified hydromagnesite composite powder, and preparation method and application thereof
US-2024409748-A1 · Dec 12, 2024 · US
Method for producing a granulated metal oxide powder and corresponding granulated metal oxide powder
US-2024376318-A1 · Nov 14, 2024 · US
Spherical crystalline silica powder and method for producing same
US-2024351893-A1 · Oct 24, 2024 · US
Barium titanate-based powder and method for producing same, and filler for sealing material
US-2024343600-A1 · Oct 17, 2024 · US
Aluminum-oxide-based-composition-containing zirconium nitride powder and method for producing same
US-2024343927-A1 · Oct 17, 2024 · US
Thermoelectric nanocomposite materials
US-12114569-B2 · Oct 8, 2024 · US
Method for producing silicon-containing oxide-coated aluminum nitride particle
US-2024327646-A1 · Oct 3, 2024 · US
Method for producing an organic functionalized inorganic substrate
US-2024307828-A1 · Sep 19, 2024 · US
Modified silica nanoparticle and methods of synthesis
US-2024271029-A1 · Aug 15, 2024 · US
Surface-treated magnesium hydroxide-comprising material
US-11975984-B2 · May 7, 2024 · US
Thermoelectric nanocomposite materials
US-11944011-B2 · Mar 26, 2024 · US
Aluminum nitride granular powder and resin composition
US-2024026119-A1 · Jan 25, 2024 · US
Closed-cell metal oxide particles
US-2023348726-A1 · Nov 2, 2023 · US
Hybrid metal oxide particles
US-2023348727-A1 · Nov 2, 2023 · US
Solvochromic effect pigments, method of production and use thereof
US-2023295443-A1 · Sep 21, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09C3/043?
- CPC C09C3/043 is the Cooperative Patent Classification code for “Drying, calcination.”
- How many patents are filed under CPC C09C3/043 (Drying, calcination)?
- Our database includes 68 publications tagged with this CPC code.
- Is patent activity under CPC C09C3/043 growing?
- Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).