System and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge
US-12583790-B2 · Mar 24, 2026 · US
Waste hot gases · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B7/4415 |
| Official title | {Waste hot gases} |
| Display label | Waste hot gases |
| Total patents | 9 |
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2021 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12583790-B2 · Mar 24, 2026 · US
US-2025051228-A1 · Feb 13, 2025 · US
US-2024246857-A1 · Jul 25, 2024 · US
US-2024190765-A1 · Jun 13, 2024 · US
US-11878950-B2 · Jan 23, 2024 · US
US-2023233987-A1 · Jul 27, 2023 · US
US-2023150871-A1 · May 18, 2023 · US
US-2021198142-A1 · Jul 1, 2021 · US
US-10914522-B2 · Feb 9, 2021 · US