Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Sulfuric acid {, other sulfurated acids or salts thereof}
Sulfuric acid {, other 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 | C22B3/08 |
| Official title | Sulfuric acid {, other sulfurated acids or salts thereof} |
| Display label | Sulfuric acid {, other sulfurated acids or salts thereof} |
| Total patents | 347 |
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 | 16 |
| 2016 | 22 |
| 2017 | 13 |
| 2018 | 21 |
| 2019 | 27 |
| 2020 | 38 |
| 2021 | 20 |
| 2022 | 18 |
| 2023 | 39 |
| 2024 | 59 |
| 2025 | 53 |
| 2026 | 21 |
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
Method for recovering high-purity scandium
US-10081851-B2 · Sep 25, 2018 · US
Scandium recovery method
US-9963762-B2 · May 8, 2018 · US
Method for manufacturing nickel and cobalt mixed sulfide and nickel oxide ore hydrometallurgical method
US-2018105896-A1 · Apr 19, 2018 · US
Extraction and recovery of yttrium and rare earth elements
US-9890441-B2 · Feb 13, 2018 · US
Sulfuric acid adding facility and operation method therefor
US-2018030569-A1 · Feb 1, 2018 · US
Method of leaching copper from copper sulfide ore and method of evaluating iodine loss content of column leaching test of the copper sulfide ore
US-2018002781-A1 · Jan 4, 2018 · US
Methods for rapidly leaching chalcopyrite
US-2017369968-A1 · Dec 28, 2017 · US
Methods for recovering metals from electronic waste, and related systems
US-2017362681-A1 · Dec 21, 2017 · US
Activation system and method for enhancing metal recovery during atmospheric leaching of metal sulfides
US-2017356063-A1 · Dec 14, 2017 · US
Method for recovering high-purity scandium
US-2017321301-A1 · Nov 9, 2017 · US
Gallium extraction agent and gallium extraction method
US-9803262-B2 · Oct 31, 2017 · US
Hydrometallurgical process for nickel oxide ore
US-9783869-B2 · Oct 10, 2017 · US
Methods for recovering metals from electronic waste, and related systems
US-9777346-B2 · Oct 3, 2017 · US
Autoclave apparatus used during high-pressure acid leaching process
US-9732400-B2 · Aug 15, 2017 · US
Hydrometallurgical treatment of anode sludge
US-2017198370-A1 · Jul 13, 2017 · US
Hydrometallurgical process for nickel oxide ore
US-2017175227-A1 · Jun 22, 2017 · US
Leaching aids and methods of using leaching aids
US-2017159153-A1 · Jun 8, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/08?
- CPC C22B3/08 is the Cooperative Patent Classification code for “Sulfuric acid {, other sulfurated acids or salts thereof}.”
- How many patents are filed under CPC C22B3/08 (Sulfuric acid {, other sulfurated acids or salts thereof})?
- Our database includes 347 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/08 growing?
- Publication counts under this code: 59 in 2024 vs 53 in 2025 (latest complete years).