- All sections
- C - Chemistry; metallurgy
- 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: 402
10-year publication summary
|
56
|
48
|
41
|
32
|
42
|
32
|
34
|
24
|
37
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
19 |
| Toshiba Corporation | 12017 |
12 |
| TDK Corporation | 6306 |
11 |
| Meidensha Corporation | 823 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
10 |
| Seagate Technology LLC | 4228 |
7 |
| Nippon Yakin Kogyo Co., Ltd. | 51 |
7 |
| Wieland-Werke AG | 315 |
7 |
| Mitsubishi Materials Corporation | 2378 |
6 |
| VDM Metals International GmbH | 97 |
6 |
| Yokowo Co., Ltd. | 464 |
6 |
| LG Electronics Inc. | 69257 |
5 |
| JX Nippon Mining & Metals Corporation | 1576 |
5 |
| Mitsubishi Shindoh Co., Ltd. | 135 |
5 |
| SAES Getters S.p.A. | 338 |
5 |
| Senju Metal Industry Co., Ltd. | 654 |
5 |
| Sumitomo Metal Mining Co., Ltd. | 1670 |
5 |
| TOKIN Corporation | 199 |
5 |
| Tokuriki Honten Co., Ltd. | 20 |
5 |
| Toshiba Materials Co., Ltd. | 600 |
5 |
| Other owners | 255 |