- All sections
- B - Performing operations; transporting
- 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: 24
10-year publication summary
|
4
|
3
|
4
|
1
|
6
|
2
|
2
|
0
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 1657 |
4 |
| Ressorts Huon Dubois | 3 |
3 |
| Andritz AG | 218 |
2 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 22 |
2 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| Depuy Synthes Products, LLC | 2880 |
1 |
| Dae Won Kang Up Co., Ltd. | 19 |
1 |
| Max Co., Ltd. | 880 |
1 |
| Nagoya Institute of Technology | 198 |
1 |
| Orii & MEC Corporation | 5 |
1 |
| Plusprings Machinery Co.,Ltd | 5 |
1 |
| Spühl GmbH | 36 |
1 |
| Suncall Corporation | 166 |
1 |
| Union Precision Hardware Co., Ltd. | 3 |
1 |
| HS Products Ltd. | 34 |
1 |
| Selco Co., Ltd. | 7 |
1 |
| Daewon Kang Up Co., Ltd. | 21 |
1 |
| Other owners | 0 |