Production of iron
US-12509745-B2 · Dec 30, 2025 · US
General methods of reducing to metals
General methods of reducing to metals · 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 | C22B5/00 |
| Official title | General methods of reducing to metals |
| Display label | General methods of reducing to metals |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 7 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating alloy
US-12500283-B2 · Dec 16, 2025 · US
Systems and methods for recycling electrodes
US-12068464-B2 · Aug 20, 2024 · US
Production of iron
US-11959153-B2 · Apr 16, 2024 · US
Production of Iron
US-2023002853-A1 · Jan 5, 2023 · US
Production of Iron
US-2023002852-A1 · Jan 5, 2023 · US
Production of iron
US-11479829-B2 · Oct 25, 2022 · US
Systems and methods for recycling electrodes
US-2021242514-A1 · Aug 5, 2021 · US
Ink compositions for fabricating objects from regoliths and methods of forming the objects
US-10793733-B2 · Oct 6, 2020 · US
Production of Iron
US-2019241990-A1 · Aug 8, 2019 · US
Hydrogen gas production method, and steel production method
US-2019202692-A1 · Jul 4, 2019 · US
Method for producing elemental rhodium
US-10308997-B2 · Jun 4, 2019 · US
Recovery of gold from solution
US-10144989-B2 · Dec 4, 2018 · US
Method for producing matte or crude metal in a suspension smelting furnace and suspension smelting furnace
US-9926617-B2 · Mar 27, 2018 · US
Ink compositions for fabricating objects from regoliths and methods of forming the objects
US-2018079922-A1 · Mar 22, 2018 · US
Recovery of gold from solution
US-2018073103-A1 · Mar 15, 2018 · US
Method for producing elemental rhodium
US-2018051358-A1 · Feb 22, 2018 · US
Method for smelting non-ferrous metal sulfides in a suspension smelting furnace and suspension smelting furnace
US-9739535-B2 · Aug 22, 2017 · US
System and process for production of magnesium metal and magnesium hydride from magnesium-containing salts and brines
US-9499880-B2 · Nov 22, 2016 · US
Five-membered cyclic anion use thereof as an electrolyte
US-9452987-B2 · Sep 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B5/00?
- CPC C22B5/00 is the Cooperative Patent Classification code for “General methods of reducing to metals.”
- How many patents are filed under CPC C22B5/00 (General methods of reducing to metals)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C22B5/00 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).