- All sections
- B - Performing operations; transporting
- 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: 130
10-year publication summary
|
13
|
7
|
21
|
13
|
13
|
9
|
8
|
9
|
10
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WAFIOS Aktiengesellschaft | 86 |
13 |
| NHK Spring Co., Ltd. | 1657 |
7 |
| Bollhoff Verbindungstechnik GmbH | 243 |
5 |
| Kabushiki Kaisha Itaya Seisaku SHO | 6 |
4 |
| Plusprings Machinery Co.,Ltd | 5 |
4 |
| Shinko Machinery Co., Ltd. | 6 |
4 |
| Ressorts Huon Dubois | 3 |
3 |
| Simplex Rapid S.r.l. | 4 |
3 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 22 |
3 |
| Daewon Kang Up Co., Ltd. | 21 |
3 |
| Toyota Motor Corporation | 28582 |
2 |
| Hyundai Motor Company | 19021 |
2 |
| C. R. Bard, Inc. | 1765 |
2 |
| Guangzhou Lianrou Machinery & Equipment Co., Ltd. | 38 |
2 |
| Springform Technology Limited | 3 |
2 |
| Union Precision Hardware Co., Ltd. | 3 |
2 |
| HS Products Ltd. | 34 |
2 |
| Product Licensing Company Limited | 2 |
2 |
| Kia Corporation | 6450 |
2 |
| Gehring Technologies GmbH + Co. KG | 43 |
2 |
| Other owners | 61 |