- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 33/00 - Making ferrous alloys
Patent holdings for IPC class C22C 33/00
Total number of patents in this class: 193
10-year publication summary
|
16
|
14
|
21
|
14
|
14
|
14
|
13
|
14
|
13
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 55916 |
7 |
| Toyota Motor Corporation | 33246 |
5 |
| Newsouth Innovations Pty Limited | 602 |
5 |
| Regents of the University of Minnesota | 2723 |
5 |
| SunCoke Technology and Development LLC | 240 |
5 |
| Qingdao Yunlu Advanced Materials Technology Co., Ltd. | 41 |
5 |
| Seiko Epson Corporation | 19675 |
4 |
| California Institute of Technology | 3991 |
4 |
| Baoshan Iron & Steel Co., Ltd. | 975 |
4 |
| Crucible Intellectual Property, LLC | 90 |
4 |
| Kang, James | 4 |
4 |
| Murata Manufacturing Co., Ltd. | 24907 |
3 |
| TDK Corporation | 6879 |
3 |
| Massachusetts Institute of Technology | 10131 |
3 |
| ArcelorMittal | 2360 |
3 |
| Elkem AS | 60 |
3 |
| Elkem ASA | 209 |
3 |
| Rolex S.A. | 683 |
3 |
| TOKIN Corporation | 211 |
3 |
| Delta Electronics (Japan), Inc. | 42 |
3 |
| Other owners | 114 |