- All sections
- B - Performing operations; transporting
- B21J - Forging; hammering; pressing metal; riveting; forge furnaces
- B21J 9/02 - Special design or construction
Patent holdings for IPC class B21J 9/02
Total number of patents in this class: 197
10-year publication summary
|
12
|
23
|
25
|
18
|
26
|
23
|
12
|
13
|
15
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NSK Ltd. | 2719 |
33 |
| NTN Corporation | 5008 |
7 |
| Aktiebolaget SKF | 2700 |
7 |
| National Machinery LLC | 45 |
7 |
| SMS Group GmbH | 1029 |
5 |
| Nippon Steel Corporation | 5649 |
4 |
| Schuler Pressen GmbH | 145 |
4 |
| Rolls-Royce PLC | 2944 |
3 |
| JTEKT Corporation | 2423 |
3 |
| CDP Bharat Forge GmbH | 7 |
3 |
| Cell Impact AB | 18 |
3 |
| Karsten Manufacturing Corporation | 2912 |
3 |
| Magna International Inc. | 1236 |
3 |
| Eaton Intelligent Power Limited | 6113 |
3 |
| Serim T&D Co., Ltd. | 5 |
3 |
| Sungjin Fo-ma Inc. | 9 |
3 |
| Samsung Display Co., Ltd. | 30585 |
2 |
| Toyota Motor Corporation | 28582 |
2 |
| Hitachi Metals, Ltd. | 2175 |
2 |
| Hyundai Motor Company | 19021 |
2 |
| Other owners | 95 |