- All sections
- B - Performing operationstransporting
- B21J - Forginghammeringpressing metalrivetingforge furnaces
- B21J 5/08 - Upsetting
Patent holdings for IPC class B21J 5/08
Total number of patents in this class: 244
10-year publication summary
|
23
|
29
|
25
|
20
|
13
|
12
|
14
|
7
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
14 |
| Neturen Co., Ltd. | 194 |
11 |
| NTN Corporation | 4976 |
9 |
| Showa Denko K.K. | 2337 |
9 |
| Nippon Steel Corporation | 6012 |
8 |
| Tata Steel Limited | 190 |
6 |
| NSK Ltd. | 2738 |
5 |
| ILJIN Steel Corporation | 7 |
4 |
| ZF Friedrichshafen AG | 7028 |
3 |
| ATI Properties LLC | 205 |
3 |
| Bharat Forge Ltd. | 35 |
3 |
| Dayton Progress Corporation | 32 |
3 |
| IHI Corporation | 3359 |
3 |
| KS Kolbenschmidt US, Inc. | 5 |
3 |
| Magna International Inc. | 1258 |
3 |
| Nidec Corporation | 2601 |
3 |
| Schuler Cartec GmbH & Co. KG | 4 |
3 |
| Sungjin Fo-ma Inc. | 9 |
3 |
| Zenkung Heavy Industry (Jiangsu) Co., Ltd. | 4 |
3 |
| Honda Motor Co., Ltd. | 24866 |
2 |
| Other owners | 143 |