- 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 47/28 - Drums or other coil-holders
Patent holdings for IPC class B21C 47/28
Total number of patents in this class: 43
10-year publication summary
|
4
|
1
|
5
|
4
|
2
|
6
|
3
|
3
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Southwire Company, LLC | 810 |
6 |
| Nippon Steel Corporation | 6969 |
4 |
| Weatherford Technology Holdings, LLC | 2165 |
3 |
| Metso Minerals, Inc. | 103 |
3 |
| Wisdri Engineering & Research Incorporation Limited | 230 |
3 |
| NV Bekaert SA | 725 |
2 |
| Primetals Technologies USA LLC | 120 |
2 |
| Toyota Motor Corporation | 36092 |
1 |
| Hitachi Metals, Ltd. | 1823 |
1 |
| Dai Nippon Printing Co., Ltd. | 4263 |
1 |
| Siemens Industry, Inc. | 1588 |
1 |
| JFE Steel Corporation | 7617 |
1 |
| POSCO | 2143 |
1 |
| Primetals Technologies Austria GmbH | 580 |
1 |
| SMS Group GmbH | 1208 |
1 |
| WAFIOS Aktiengesellschaft | 104 |
1 |
| U.S. Tsubaki Holdings, Inc. | 84 |
1 |
| Trinity Bay Equipment Holdings, LLC | 71 |
1 |
| HS Products Ltd. | 49 |
1 |
| hpl-Neugnadenfelder Maschinenfabrik GmbH | 4 |
1 |
| Other owners | 7 |