Method for crushing hard tungsten carbide scraps
US-10161017-B2 · Dec 25, 2018 · US
Sulfurated acids or salts thereof
Sulfurated acids or salts thereof · 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 | C22B23/043 |
| Official title | {Sulfurated acids or salts thereof} |
| Display label | Sulfurated acids or salts thereof |
| Total patents | 269 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 16 |
| 2017 | 11 |
| 2018 | 20 |
| 2019 | 11 |
| 2020 | 21 |
| 2021 | 10 |
| 2022 | 16 |
| 2023 | 39 |
| 2024 | 47 |
| 2025 | 43 |
| 2026 | 17 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing nickel and cobalt mixed sulfide and nickel oxide ore hydrometallurgical method
US-10125408-B2 · Nov 13, 2018 · US
Method for producing hematite for ironmaking
US-10125025-B2 · Nov 13, 2018 · US
Mineral ore slurry pretreatment method, and method for manufacturing mineral ore slurry
US-2018291478-A1 · Oct 11, 2018 · US
Method for producing cobalt powder
US-2018169764-A1 · Jun 21, 2018 · US
Method for manufacturing nickel and cobalt mixed sulfide and nickel oxide ore hydrometallurgical method
US-2018105896-A1 · Apr 19, 2018 · US
Dezincification plant, method for operating dezincification plant, and hydrometallurgical method for nickel oxide ore
US-9945007-B2 · Apr 17, 2018 · US
Hematite manufacturing process and hematite manufactured by same
US-9938158-B2 · Apr 10, 2018 · US
Method for removing iron from iron-containing solution and method for recovering valuable metals
US-2018073098-A1 · Mar 15, 2018 · US
Method for producing nickel sulfide and hydrometallurgical method for nickel oxide ore
US-2018044760-A1 · Feb 15, 2018 · US
Method for producing hematite for ironmaking
US-9890055-B2 · Feb 13, 2018 · US
Wet smelting method for nickel oxide ore
US-2018037972-A1 · Feb 8, 2018 · US
Production method for hematite for iron production
US-2018037470-A1 · Feb 8, 2018 · US
Ore slurry pre-treatment method and ore slurry manufacturing method
US-2018037971-A1 · Feb 8, 2018 · US
Sulfuric acid adding facility and operation method therefor
US-2018030569-A1 · Feb 1, 2018 · US
Hydrometallurgical process for nickel oxide ore
US-9783869-B2 · Oct 10, 2017 · US
Method and apparatus for acid granulation of matte
US-9777345-B2 · Oct 3, 2017 · US
Operation method for dezincification plant
US-9751035-B2 · Sep 5, 2017 · US
Nickel recovery process
US-2017240994-A1 · Aug 24, 2017 · US
Autoclave apparatus used during high-pressure acid leaching process
US-9732400-B2 · Aug 15, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B23/043?
- CPC C22B23/043 is the Cooperative Patent Classification code for “Sulfurated acids or salts thereof.”
- How many patents are filed under CPC C22B23/043 (Sulfurated acids or salts thereof)?
- Our database includes 269 publications tagged with this CPC code.
- Is patent activity under CPC C22B23/043 growing?
- Publication counts under this code: 47 in 2024 vs 43 in 2025 (latest complete years).