Coated steel member, coated steel sheet, and methods for manufacturing same
US-11427882-B2 · Aug 30, 2022 · US
solutions containing H2SO4
solutions containing H2SO4 · 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 | C23G1/081 |
| Official title | {solutions containing H2SO4} |
| Display label | solutions containing H2SO4 |
| Total patents | 140 |
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 | 4 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 9 |
| 2022 | 34 |
| 2023 | 12 |
| 2024 | 21 |
| 2025 | 26 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of cleaning pretreatment of ferrous components that have been joined by welding
US-11408080-B2 · Aug 9, 2022 · US
Chromium-containing steel sheet for current collector of nonaqueous electrolyte secondary battery and method for manufacturing the same
US-2022246943-A1 · Aug 4, 2022 · US
Martensitic stainless steel pipe and method of manufacturing the same
US-2022195610-A1 · Jun 23, 2022 · US
High-strength steel sheet and method for manufacturing same
US-2022186333-A1 · Jun 16, 2022 · US
Method for manufacturing of stainless steel strips
US-2022177989-A1 · Jun 9, 2022 · US
Steel member, steel sheet, and methods for manufacturing same
US-11352684-B2 · Jun 7, 2022 · US
Acid solution preparation device, acid solution supply apparatus, and pickling facility
US-2022154351-A1 · May 19, 2022 · US
Non oriented electrical steel sheet and method for producing thereof
US-2022145418-A1 · May 12, 2022 · US
Method for producing grain oriented electrical steel sheet
US-2022119905-A1 · Apr 21, 2022 · US
Method for producing grain oriented electrical steel sheet
US-2022106661-A1 · Apr 7, 2022 · US
Method for producing grain oriented electrical steel sheet
US-2022098690-A1 · Mar 31, 2022 · US
Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet
US-2022090241-A1 · Mar 24, 2022 · US
Grain-oriented electrical steel sheet and method of producing the same
US-2022068526-A1 · Mar 3, 2022 · US
Steel member, steel sheet, and methods for manufacturing same
US-2021395870-A1 · Dec 23, 2021 · US
Coated steel member, coated steel sheet, and methods for manufacturing same
US-2021355560-A1 · Nov 18, 2021 · US
Pickling device
US-11162177-B2 · Nov 2, 2021 · US
Composition for reducing the removal of material by pickling in the pickling of metal surfaces that contain galvanized and/or ungalvanized steel
US-11124884-B2 · Sep 21, 2021 · US
High-strength cold-rolled steel sheet
US-11085099-B2 · Aug 10, 2021 · US
Stainless steel for polymer fuel cell separator and method for preparing same
US-11047029-B2 · Jun 29, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23G1/081?
- CPC C23G1/081 is the Cooperative Patent Classification code for “solutions containing H2SO4.”
- How many patents are filed under CPC C23G1/081 (solutions containing H2SO4)?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC C23G1/081 growing?
- Publication counts under this code: 21 in 2024 vs 26 in 2025 (latest complete years).