- All sections
- B - Performing operations; transporting
- B21B - Rolling of metal
- B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
Patent holdings for IPC class B21B 45/00
Total number of patents in this class: 247
10-year publication summary
|
26
|
22
|
17
|
15
|
13
|
20
|
17
|
25
|
11
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
30 |
| SMS Group GmbH | 1029 |
22 |
| Nippon Steel Corporation | 5649 |
16 |
| Toshiba Mitsubishi-Electric Industrial Systems Corporation | 1583 |
16 |
| Primetals Technologies Austria GmbH | 479 |
10 |
| POSCO | 2222 |
9 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
7 |
| Danieli & C. Officine Meccaniche S.p.A. | 680 |
5 |
| SMS Siemag Aktiengesellschaft | 529 |
5 |
| Nisshin Steel Co., Ltd. | 401 |
4 |
| Novelis Inc. | 656 |
4 |
| Baosteel Zhanjiang Iron & Steel Co., Ltd. | 12 |
4 |
| Sumitomo Electric Industries, Ltd. | 14131 |
3 |
| Hitachi Metals, Ltd. | 2175 |
3 |
| ArcelorMittal | 1887 |
3 |
| Materion Corporation | 293 |
3 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 61 |
3 |
| POSCO Co., Ltd. | 1059 |
3 |
| Primetals Technologies Japan, Ltd. | 143 |
3 |
| Toho Titanium Co., Ltd. | 249 |
3 |
| Other owners | 91 |