- All sections
- B - Performing operations; transporting
- B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; punching metal
- B21D 3/16 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts of specific articles made from metal rods, tubes, or profiles, e.g. crankshafts, by specially-adapted methods or means
Patent holdings for IPC class B21D 3/16
Total number of patents in this class: 77
10-year publication summary
|
18
|
5
|
7
|
4
|
8
|
8
|
5
|
2
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Victor Equipment Company | 291 |
7 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
3 |
| The Boeing Company | 19843 |
2 |
| Cie Automotive, S.A. | 30 |
2 |
| CITIC Dicastal CO., LTD | 531 |
2 |
| Hegenscheidt-MFD GmbH & Co. KG | 73 |
2 |
| JFE Steel Corporation | 6067 |
2 |
| Korea East-West Power Co., Ltd. | 29 |
2 |
| Korea Electric Power Corporation | 467 |
2 |
| Korea Midland Power Co., Ltd. | 19 |
2 |
| Korea South Power Co., Ltd. | 23 |
2 |
| Korea Western Power Co., Ltd. | 43 |
2 |
| Trinity Bay Equipment Holdings, LLC | 244 |
2 |
| Kyung Nam Metal Co., Ltd. | 3 |
2 |
| General Electric Company | 18133 |
1 |
| Schlumberger Canada Limited | 6913 |
1 |
| Schlumberger Technology B.v. | 4951 |
1 |
| Schlumberger Holdings Limited | 2947 |
1 |
| Honda Motor Co., Ltd. | 24537 |
1 |
| SNECMA S.A. | 1160 |
1 |
| Other owners | 37 |