- All sections
- B - Performing operations; transporting
- B21B - Rolling of metal
- B21B 37/46 - Roll speed or drive motor control
Patent holdings for IPC class B21B 37/46
Total number of patents in this class: 89
10-year publication summary
|
5
|
5
|
6
|
10
|
4
|
9
|
6
|
8
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Primetals Technologies Germany GmbH | 194 |
10 |
| SMS Group GmbH | 1078 |
8 |
| Siemens AG | 24572 |
7 |
| Toshiba Mitsubishi-Electric Industrial Systems Corporation | 987 |
6 |
| Nippon Steel Corporation | 5991 |
5 |
| The Bradbury Company, Inc. | 44 |
4 |
| Danieli & C. Officine Meccaniche S.p.A. | 705 |
4 |
| Primetals Technologies Japan, Ltd. | 152 |
4 |
| Primetals Technologies USA LLC | 118 |
3 |
| Baoshan Iron & Steel Co., Ltd. | 890 |
2 |
| Hegenscheidt-MFD GmbH & Co. KG | 72 |
2 |
| Hyundai Steel Company | 348 |
2 |
| POSCO | 2204 |
2 |
| Primetals Technologies Austria GmbH | 509 |
2 |
| TMEIC Corporation | 699 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8515 |
1 |
| Hitachi, Ltd. | 15203 |
1 |
| Siemens VAI Metals Technologies GmbH | 226 |
1 |
| Siemens Industry, Inc. | 1425 |
1 |
| Northwestern University | 3272 |
1 |
| Other owners | 21 |