- All sections
- B - Performing operationstransporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 21/16 - Remodelling hollow bodies with respect to the shape of the cross-section
Patent holdings for IPC class B21K 21/16
Total number of patents in this class: 47
10-year publication summary
|
3
|
2
|
0
|
1
|
2
|
0
|
3
|
2
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DL Technology, LLC | 24 |
6 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
4 |
| NSK Ltd. | 2802 |
2 |
| Chevron Phillips Chemical Company LP | 1835 |
2 |
| SANYO Special Steel Co., Ltd. | 228 |
2 |
| Tata Steel Limited | 174 |
2 |
| Total Research & Technology Feluy | 446 |
2 |
| Metaldyne GmbH | 2 |
2 |
| Becton, Dickinson and Company | 7321 |
1 |
| Whirlpool Corporation | 4437 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10956 |
1 |
| Air Cool Industrial Co., Ltd. | 270 |
1 |
| Brigham Young University | 598 |
1 |
| Carolina Stair Supply, Inc. | 13 |
1 |
| Corning Optical Communications LLC | 1308 |
1 |
| Coway Co., Ltd. | 738 |
1 |
| Gunderson LLC | 64 |
1 |
| GWS Tube Forming Solutions Inc. | 11 |
1 |
| Kann Manufacturing Corporation | 18 |
1 |
| Kilr-Chilr, LLC | 5 |
1 |
| Other owners | 13 |