- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 30/02 - Alloys containing less than 50% by weight of each constituent containing copper
Patent holdings for IPC class C22C 30/02
Total number of patents in this class: 483
10-year publication summary
|
39
|
32
|
42
|
29
|
32
|
23
|
38
|
47
|
42
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6616 |
36 |
| Toshiba Corporation | 12578 |
13 |
| TDK Corporation | 6784 |
11 |
| Meidensha Corporation | 910 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
10 |
| Yokowo Co., Ltd. | 562 |
9 |
| Nippon Yakin Kogyo Co., Ltd. | 68 |
8 |
| VDM Metals International GmbH | 105 |
8 |
| Wieland-Werke AG | 350 |
8 |
| Seagate Technology LLC | 3985 |
7 |
| LG Electronics Inc. | 74502 |
6 |
| Mitsubishi Materials Corporation | 2467 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1904 |
6 |
| Proterial, Ltd. | 909 |
6 |
| Ishifuku Metal Industry Co., Ltd. | 38 |
5 |
| JX Nippon Mining & Metals Corporation | 1471 |
5 |
| Senju Metal Industry Co., Ltd. | 692 |
5 |
| TOKIN Corporation | 212 |
5 |
| Tokuriki Honten Co., Ltd. | 22 |
5 |
| UT-Battelle, LLC | 1492 |
5 |
| Other owners | 308 |