- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 33/00 - Making ferrous alloys
Patent holdings for IPC class C22C 33/00
Total number of patents in this class: 177
10-year publication summary
|
22
|
18
|
14
|
22
|
16
|
14
|
14
|
13
|
14
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 50209 |
8 |
| Toyota Motor Corporation | 28582 |
5 |
| Murata Manufacturing Co., Ltd. | 22355 |
5 |
| Newsouth Innovations Pty Limited | 567 |
5 |
| Regents of the University of Minnesota | 2620 |
5 |
| Seiko Epson Corporation | 18724 |
4 |
| California Institute of Technology | 3884 |
4 |
| Crucible Intellectual Property, LLC | 93 |
4 |
| Alps Alpine Co., Ltd. | 1831 |
4 |
| Qingdao Yunlu Advanced Materials Technology Co., Ltd. | 32 |
4 |
| Kang, James | 4 |
4 |
| TDK Corporation | 6306 |
3 |
| Massachusetts Institute of Technology | 9795 |
3 |
| ArcelorMittal | 1887 |
3 |
| Elkem AS | 66 |
3 |
| Elkem ASA | 205 |
3 |
| Rolex S.A. | 606 |
3 |
| UT-Battelle, LLC | 1333 |
3 |
| Proterial, Ltd. | 638 |
3 |
| Lawrence Livermore National Security, LLC | 1834 |
2 |
| Other owners | 99 |