- All sections
- B - Performing operationstransporting
- B21F - Working or processing of metal wire
- B21F 3/06 - Coiling wire into particular forms helically internally on a hollow form
Patent holdings for IPC class B21F 3/06
Total number of patents in this class: 25
10-year publication summary
|
4
|
1
|
6
|
2
|
2
|
0
|
1
|
1
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 1989 |
4 |
| Ressorts Huon Dubois | 3 |
3 |
| Andritz AG | 245 |
2 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 28 |
2 |
| Mitsubishi Electric Corporation | 48146 |
1 |
| Depuy Synthes Products, LLC | 2775 |
1 |
| Dae Won Kang Up Co., Ltd. | 18 |
1 |
| Max Co., Ltd. | 865 |
1 |
| Nagoya Institute of Technology | 255 |
1 |
| Orii & MEC Corporation | 5 |
1 |
| Plusprings Machinery Co.,Ltd | 5 |
1 |
| Spühl GmbH | 42 |
1 |
| Suncall Corporation | 198 |
1 |
| WAFIOS Aktiengesellschaft | 104 |
1 |
| HS Products Ltd. | 47 |
1 |
| Selco Co., Ltd. | 8 |
1 |
| Daewon Kang Up Co., Ltd. | 20 |
1 |
| Linhai Weixing New Building Materials Co., Ltd | 31 |
1 |
| Other owners | 0 |