Treatment process for crystallizing a metal sulfate
US-2026070803-A1 · Mar 12, 2026 · US
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Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation)
Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation) · 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 | C01B17/96 |
| Official title | Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation) |
| Display label | Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation) |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2023 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment process for crystallizing a metal sulfate
US-12441621-B2 · Oct 14, 2025 · US
Processes for crystallizing metal sulfates and methods for producing crystallized metal sulfates
US-12281027-B2 · Apr 22, 2025 · US
Method of treating fly ash of a recovery boiler
US-11725341-B2 · Aug 15, 2023 · US
Dynamic covalent polymerizations with elemental sulfur and sulfur prepolymers
US-2023089692-A1 · Mar 23, 2023 · US
Processes and methods for production of crystallized metal sulfates
US-2023048939-A1 · Feb 16, 2023 · US
Fire retardant compositions utilizing elemental sulfur
US-11015023-B2 · May 25, 2021 · US
3D-printing of ultra-high refractive index polymers
US-10920020-B2 · Feb 16, 2021 · US
Cathode materials for Li—S batteries
US-10894863-B2 · Jan 19, 2021 · US
Sulfur composites and polymeric materials from elemental sulfur
US-10833330-B1 · Nov 10, 2020 · US
Method of treating fly ash of a recovery boiler
US-2020181841-A1 · Jun 11, 2020 · US
Fire retardant compositions utilizing elemental sulfur
US-2019338076-A1 · Nov 7, 2019 · US
Method for rapidly determining sulfur content in a plurality of samples
US-10458964-B2 · Oct 29, 2019 · US
Regenerative recovery of sulfur dioxide from effluent gases
US-2019201837-A1 · Jul 4, 2019 · US
Regenerative recovery of sulfur dioxide from effluent gases
US-10272380-B2 · Apr 30, 2019 · US
Method for rapidly determining sulfur content in a plurality of samples
US-2019101514-A1 · Apr 4, 2019 · US
3d-printing of ultra-high refractive index polymers
US-2018105649-A1 · Apr 19, 2018 · US
Hematite manufacturing process and hematite manufactured by same
US-9938158-B2 · Apr 10, 2018 · US
CATHODE MATERIALS FOR Li-S BATTERIES
US-2018079865-A1 · Mar 22, 2018 · US
Sulfur composites and polymeric materials from elemental sulfur
US-9567439-B1 · Feb 14, 2017 · US