- All sections
- B - Performing operations; transporting
- B21J - Forging; hammering; pressing metal; riveting; forge furnaces
- B21J 5/00 - Methods for forging, hammering, or pressing; Special equipment or accessories therefor
Patent holdings for IPC class B21J 5/00
Total number of patents in this class: 373
10-year publication summary
|
41
|
48
|
33
|
28
|
30
|
33
|
23
|
30
|
13
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Showa Denko K.K. | 2539 |
20 |
| Hitachi Metals, Ltd. | 2175 |
16 |
| IHI Corporation | 3268 |
12 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
10 |
| Saint Jean Industries | 46 |
7 |
| Toyota Motor Corporation | 28582 |
6 |
| Nippon Steel Corporation | 5649 |
6 |
| Safran Aircraft Engines | 5739 |
6 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
5 |
| Tokyo Institute of Technology | 1367 |
5 |
| Ti̇rsan Kardan Sanayi̇ ve Ti̇caret Anoni̇m Şi̇rketi̇ | 38 |
5 |
| Howmet Aerospace Inc. | 367 |
5 |
| Rtx Corporation | 8674 |
5 |
| Hitachi, Ltd. | 16452 |
4 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4569 |
4 |
| Bharat Forge Ltd. | 35 |
4 |
| JX Nippon Mining & Metals Corporation | 1576 |
4 |
| National Institute for Materials Science | 1108 |
4 |
| Arconic Inc. | 259 |
4 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6132 |
4 |
| Other owners | 237 |