- 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: 146
10-year publication summary
|
6
|
20
|
13
|
11
|
9
|
8
|
9
|
10
|
9
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WAFIOS Aktiengesellschaft | 98 |
13 |
| NHK Spring Co., Ltd. | 1901 |
11 |
| Bollhoff Verbindungstechnik GmbH | 253 |
5 |
| Kabushiki Kaisha Itaya Seisaku SHO | 6 |
4 |
| Plusprings Machinery Co.,Ltd | 5 |
4 |
| Toyota Motor Corporation | 32956 |
3 |
| Ressorts Huon Dubois | 3 |
3 |
| Shinko Machinery Co., Ltd. | 5 |
3 |
| Simplex Rapid S.r.l. | 4 |
3 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 26 |
3 |
| Daewon Kang Up Co., Ltd. | 21 |
3 |
| Hyundai Motor Company | 22369 |
2 |
| Avantec Vascular Corporation | 54 |
2 |
| C. R. Bard, Inc. | 1771 |
2 |
| Guangzhou Lianrou Machinery & Equipment Co., Ltd. | 43 |
2 |
| Sealy Technology LLC | 360 |
2 |
| Springform Technology Limited | 3 |
2 |
| Tecnomatic S.p.A. | 79 |
2 |
| ThyssenKrupp AG | 3311 |
2 |
| ThyssenKrupp Federn und Stabilisatoren GmbH | 50 |
2 |
| Other owners | 73 |