Method for producing phosphoric acid and calcium sulphate quality suitable for a clinker process for the commercial and industrial utilization of calcium sulphate
US-12583747-B2 · Mar 24, 2026 · US
Preparation
Preparation · 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 | C01B17/74 |
| Official title | Preparation |
| Display label | Preparation |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method of generating hydrogen gas
US-12559401-B2 · Feb 24, 2026 · US
System and method of generating electricity in a body of water
US-12441644-B2 · Oct 14, 2025 · US
System and method of separating oxygen from a body of water
US-12428328-B2 · Sep 30, 2025 · US
METHOD OF PRODUCING H2 AND/OR BR2 BY ELECTROLYSING HBr USING FLUOROPOLYMER MEMBRANES
US-2025263859-A1 · Aug 21, 2025 · US
Method of electrolysing hydrogen bromide after h2so4 synthesis
US-2025257477-A1 · Aug 14, 2025 · US
A process for conversion of aqueous hydrogen sulfide to sulfuric acid
US-2025154005-A1 · May 15, 2025 · US
Process to make calcium oxide or ordinary portland cement from calcium bearing rocks and minerals
US-2024383804-A1 · Nov 21, 2024 · US
Process to convert reduced sulfur species and water into hydrogen and sulfuric acid
US-12110601-B2 · Oct 8, 2024 · US
Integrated method for producing sulphur dioxide quality suitable for a sulphuric acid process from calcium sulphate/phosphogypsum from phosphoric acid production
US-11845657-B2 · Dec 19, 2023 · US
Method for producing phosphoric acid and calcium sulphate quality suitable for a clinker process for the commercial and industrial utilization of calcium sulphate
US-2023373789-A1 · Nov 23, 2023 · US
Process to make calcium oxide or ordinary portland cement from calcium bearing rocks and minerals
US-2023339807-A1 · Oct 26, 2023 · US
Process to make calcium oxide or ordinary Portland cement from calcium bearing rocks and minerals
US-11718558-B2 · Aug 8, 2023 · US
Integrated method for producing sulphur dioxide quality suitable for a sulphuric acid process from calcium sulphate/phosphogypsum from phosphoric acid production
US-2023126633-A1 · Apr 27, 2023 · US
Method of Recovering Nitrogen and Sulfur Resources Through Anaerobic Fermentation
US-2023048768-A1 · Feb 16, 2023 · US
Integrated method for the commercial and industrial utilisation of calcium sulphate whilst obtaining rare earth elements from the production of phosphoric acid
US-2023039227-A1 · Feb 9, 2023 · US
Process and reactor comprising a plurality of catalyst receptacles
US-11560309-B2 · Jan 24, 2023 · US
Process to make calcium oxide or ordinary portland cement from calcium bearing rocks and minerals
US-2022411328-A1 · Dec 29, 2022 · US
Process to convert reduced sulfur species and water into hydrogen and sulfuric acid
US-2022411940-A1 · Dec 29, 2022 · US
Process for the removal of particulate matter from an aqueous stream
US-2022401863-A1 · Dec 22, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B17/74?
- CPC C01B17/74 is the Cooperative Patent Classification code for “Preparation.”
- How many patents are filed under CPC C01B17/74 (Preparation)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C01B17/74 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).