Application of performic acid (pfa) for mineral processing
US-2024409419-A1 · Dec 12, 2024 · US
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Calcium sulfates
Calcium sulfates · 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 | C09C1/025 |
| Official title | {Calcium sulfates} |
| Display label | Calcium sulfates |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2020 | 3 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grinding stabilizing additive for vertical roller mills
US-2024150237-A1 · May 9, 2024 · US
Grinding stabilizing additive for vertical roller mills
US-11684929-B2 · Jun 27, 2023 · US
Inorganic particulate material suitable for use in polymeric films
US-11639441-B2 · May 2, 2023 · US
Method of milling minerals in the presence of a poly (itaconate)
US-11578214-B2 · Feb 14, 2023 · US
Pigment dispersion comprising silane-modified colloidal silica particles and a water-soluble thickening polymer
US-2022154029-A1 · May 19, 2022 · US
Method of milling minerals in the presence of a poly (itaconate)
US-2020291239-A1 · Sep 17, 2020 · US
Early strength enhancement of cements
US-2020055775-A1 · Feb 20, 2020 · US
Grinding stabilizing additive for vertical roller mills
US-2020047188-A1 · Feb 13, 2020 · US
Charge director for liquid toner
US-9417545-B2 · Aug 16, 2016 · US
Charge director for liquid toner
US-2016170320-A1 · Jun 16, 2016 · US
Charge director for liquid toner
US-9353267-B2 · May 31, 2016 · US