- All sections
- B - Performing operationstransporting
- B21F - Working or processing of metal wire
- B21F 3/02 - Coiling wire into particular forms helically
Patent holdings for IPC class B21F 3/02
Total number of patents in this class: 156
10-year publication summary
|
21
|
13
|
13
|
9
|
8
|
9
|
9
|
10
|
16
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 2037 |
13 |
| WAFIOS Aktiengesellschaft | 105 |
13 |
| Bollhoff Verbindungstechnik GmbH | 259 |
5 |
| Hyundai Motor Company | 25253 |
4 |
| Plusprings Machinery Co.,Ltd | 5 |
4 |
| Kia Corporation | 12991 |
4 |
| Toyota Motor Corporation | 36544 |
3 |
| Ressorts Huon Dubois | 3 |
3 |
| Sealy Technology LLC | 373 |
3 |
| Shinko Machinery Co., Ltd. | 5 |
3 |
| Simplex Rapid S.r.l. | 4 |
3 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 28 |
3 |
| Daewon Kang Up Co., Ltd. | 19 |
3 |
| C. R. Bard, Inc. | 1762 |
2 |
| Edwards Lifesciences Corporation | 4931 |
2 |
| Guangzhou Lianrou Machinery & Equipment Co., Ltd. | 44 |
2 |
| Infraredx, Inc. | 69 |
2 |
| Kabushiki Kaisha Itaya Seisaku SHO | 3 |
2 |
| Springform Technology Limited | 3 |
2 |
| Tecnomatic S.p.A. | 81 |
2 |
| Other owners | 78 |