- All sections
- B - Performing operationstransporting
- B21J - Forginghammeringpressing metalrivetingforge furnaces
- B21J 5/02 - Die forgingTrimming by making use of special dies
Patent holdings for IPC class B21J 5/02
Total number of patents in this class: 392
10-year publication summary
|
39
|
52
|
48
|
43
|
32
|
22
|
23
|
22
|
13
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6482 |
29 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
22 |
| NSK Ltd. | 2810 |
16 |
| Hitachi Metals, Ltd. | 1957 |
14 |
| NTN Corporation | 4969 |
14 |
| Bharat Forge Ltd. | 45 |
6 |
| Rolls-Royce PLC | 3140 |
5 |
| Sungjin Fo-ma Inc. | 9 |
5 |
| ThyssenKrupp Presta AG | 1099 |
4 |
| Howmet Aerospace Inc. | 394 |
4 |
| Rtx Corporation | 9596 |
4 |
| Honda Motor Co., Ltd. | 25780 |
3 |
| Toyota Motor Corporation | 33440 |
3 |
| Denso Corporation | 24783 |
3 |
| Showa Denko K.K. | 2177 |
3 |
| Aubert & Duval | 112 |
3 |
| CITIC Dicastal CO., LTD | 563 |
3 |
| Eaton Capital | 9 |
3 |
| JFE Steel Corporation | 7054 |
3 |
| Kobe Steel, Ltd. | 885 |
3 |
| Other owners | 242 |