- All sections
- B - Performing operationstransporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rollingauxiliary operations used in connection with metal-working without essentially removing material
- B21C 47/30 - Drums or other coil-holders expansible or contractible
Patent holdings for IPC class B21C 47/30
Total number of patents in this class: 30
10-year publication summary
|
2
|
4
|
3
|
1
|
2
|
5
|
1
|
1
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SMS Demag AG | 113 |
3 |
| SMS Group GmbH | 1113 |
3 |
| Cockerill Maintenance & Ingenierie SA | 80 |
2 |
| Primetals Technologies Austria GmbH | 525 |
2 |
| SMS Siemag Aktiengesellschaft | 507 |
2 |
| Southwire Company, LLC | 779 |
2 |
| Jiangsu Yawei Machine-tool Co., Ltd. | 45 |
2 |
| The Boeing Company | 20025 |
1 |
| Danieli & C. Officine Meccaniche S.p.A. | 710 |
1 |
| Flexsteel Pipeline Technologies, Inc. | 9 |
1 |
| N2 Global, SIA | 9 |
1 |
| Neturen Co., Ltd. | 195 |
1 |
| Nippon Steel Corporation | 6181 |
1 |
| Oerlikon Textile GmbH & Co. KG | 609 |
1 |
| Renova SRL | 5 |
1 |
| Toshiba Mitsubishi-Electric Industrial Systems Corporation | 995 |
1 |
| hpl-Neugnadenfelder Maschinenfabrik GmbH | 4 |
1 |
| Taier Heavy Industry Co., Ltd. | 6 |
1 |
| Taicang Jinghong Intelligent Technology Co., Ltd | 5 |
1 |
| Petro Pipe, LLC | 3 |
1 |
| Other owners | 1 |