Applied magnetic field synthesis and processing of iron nitride magnetic materials
US-12338536-B2 · Jun 24, 2025 · US
Making ferrous alloys
Making ferrous alloys · 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 | C22C33/00 |
| Official title | Making ferrous alloys |
| Display label | Making ferrous alloys |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 8 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compact hydrogen-oxygen generator
US-12305303-B2 · May 20, 2025 · US
Optimized gamma-prime strengthened austenitic trip steel and designing methods of same
US-12129525-B2 · Oct 29, 2024 · US
Production specification determination method, production method, and production specification determination apparatus for metal material
US-12083568-B2 · Sep 10, 2024 · US
Coffee as a carbon source in the preparation of iron and ferro-alloys
US-2024175100-A1 · May 30, 2024 · US
Rotating electric machine
US-11588359-B2 · Feb 21, 2023 · US
Soft magnetic powder, powder magnetic core, magnetic element, and electronic device
US-11545285-B2 · Jan 3, 2023 · US
Fe-Ni Nanocomposite Alloys
US-2022316037-A1 · Oct 6, 2022 · US
A compact hydrogen-oxygen generator
US-2022298654-A1 · Sep 22, 2022 · US
Optimized gamma-prime strengthened austenitic trip steel and designing methods of same
US-2022195547-A1 · Jun 23, 2022 · US
Additive manufactured interpenetrating phase composite
US-11325206-B2 · May 10, 2022 · US
Rotating electric machine
US-2022085669-A1 · Mar 17, 2022 · US
Production specification determination method, production method, and production specification determination apparatus for metal material
US-2022072593-A1 · Mar 10, 2022 · US
Optimized gamma-prime strengthened austenitic trip steel and designing methods of same
US-11242576-B2 · Feb 8, 2022 · US
Bearing bushing for track, and method for producing the same
US-11162152-B2 · Nov 2, 2021 · US
Applied magnetic field synthesis and processing of iron nitride magnetic materials
US-2021180174-A1 · Jun 17, 2021 · US
Applied magnetic field synthesis and processing of iron nitride magnetic materials
US-10961615-B2 · Mar 30, 2021 · US
Soft magnetic powder, powder magnetic core, magnetic element, and electronic device
US-2020258665-A1 · Aug 13, 2020 · US
Soft magnetic powder, powder magnetic core, magnetic element, and electronic device
US-10672547-B2 · Jun 2, 2020 · US
Method for modifying grain boundary of Nd—Fe—B base magnet, and body with modified grain boundary treated by the method
US-10589355-B2 · Mar 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C33/00?
- CPC C22C33/00 is the Cooperative Patent Classification code for “Making ferrous alloys.”
- How many patents are filed under CPC C22C33/00 (Making ferrous alloys)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C22C33/00 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).