Process and System for the Calcination of Gypsum
US-2025353789-A1 · Nov 20, 2025 · US
Devices therefor {characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained} · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B11/028 |
| Official title | Devices therefor {characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained} |
| Display label | Devices therefor {characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained} |
| Total patents | 10 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025353789-A1 · Nov 20, 2025 · US
US-2025345967-A1 · Nov 13, 2025 · US
US-2025153124-A1 · May 15, 2025 · US
US-2025136504-A1 · May 1, 2025 · US
US-2024246855-A1 · Jul 25, 2024 · US
US-2023373854-A1 · Nov 23, 2023 · US
US-2023089781-A1 · Mar 23, 2023 · US
US-10350564-B2 · Jul 16, 2019 · US
US-2018036697-A1 · Feb 8, 2018 · US
US-9862903-B2 · Jan 9, 2018 · US