- All sections
- B - Performing operationstransporting
- B21J - Forginghammeringpressing metalrivetingforge furnaces
- B21J 1/04 - Shaping in the rough solely by forging or pressing
Patent holdings for IPC class B21J 1/04
Total number of patents in this class: 76
10-year publication summary
|
5
|
3
|
5
|
3
|
0
|
3
|
7
|
5
|
10
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6843 |
6 |
| Politechnika Warszawska | 88 |
4 |
| Hitachi Metals, Ltd. | 1900 |
3 |
| ATI Properties LLC | 200 |
3 |
| Proterial, Ltd. | 933 |
3 |
| GFM - GmbH | 33 |
2 |
| IHI Corporation | 3532 |
2 |
| SMS Group GmbH | 1194 |
2 |
| Washi Kosan Co., Ltd. | 8 |
2 |
| Endo Manufacturing Co., Ltd. | 5 |
2 |
| Toyota Motor Corporation | 35680 |
1 |
| Nissan Motor Co., Ltd. | 12947 |
1 |
| Acushnet Company | 2699 |
1 |
| Seiko Instruments Inc. | 455 |
1 |
| NTN Corporation | 4915 |
1 |
| Showa Denko K.K. | 2072 |
1 |
| NSK Ltd. | 2831 |
1 |
| Komatsu Ltd. | 4703 |
1 |
| Aktiebolaget SKF | 3126 |
1 |
| ATI Properties, Inc. | 82 |
1 |
| Other owners | 37 |