Coal-based solid waste transport and filling integrated machine mining system and method
US-12467362-B2 · Nov 11, 2025 · US
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the synthetic calcium sulfate being a flue gas desulfurization product
the synthetic calcium sulfate being a flue gas desulfurization product · 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 | C04B28/144 |
| Official title | {the synthetic calcium sulfate being a flue gas desulfurization product} |
| Display label | the synthetic calcium sulfate being a flue gas desulfurization product |
| Total patents | 13 |
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 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Moisture-resistant gypsum boards and methods of making them
US-2025171361-A1 · May 29, 2025 · US
Low-cost four-element system cementitious material, preparation method and application thereof
US-2024208861-A1 · Jun 27, 2024 · US
Coal-based solid waste transport and filling integrated machine mining system and method
US-2023383653-A1 · Nov 30, 2023 · US
Methods of removing chloride from gypsum having high level of chloride salt
US-11760689-B2 · Sep 19, 2023 · US
Methods of removing chloride from gypsum having high level of chloride salt
US-2022324756-A1 · Oct 13, 2022 · US
Gypsum panels, methods, and systems
US-11136267-B2 · Oct 5, 2021 · US
Gypsum Panels, Methods, and Systems
US-2020087209-A1 · Mar 19, 2020 · US
Gypsum panels, methods, and systems
US-10427979-B2 · Oct 1, 2019 · US
Gypsum panels, methods, and systems
US-2019270675-A1 · Sep 5, 2019 · US
Method for selectively inhibiting sulfate-reducing bacterium, gypsum composition capable of inhibiting proliferation of sulfate-reducing bacterium by said method, gypsum-type solidifying material, and gypsum-type building material
US-9901101-B2 · Feb 27, 2018 · US
Gypsum-containing construction material compounds
US-9216927-B2 · Dec 22, 2015 · US
Method for selectively inhibiting sulfate-reducing bacterium, gypsum composition capable of inhibiting proliferation of sulfate-reducing bacterium by said method, gypsum-type solidifying material, and gypsum-type building material
US-2015216177-A1 · Aug 6, 2015 · US