- All sections
- B - Performing operationstransporting
- B21F - Working or processing of metal wire
- B21F 3/04 - Coiling wire into particular forms helically externally on a mandrel or the like
Patent holdings for IPC class B21F 3/04
Total number of patents in this class: 78
10-year publication summary
|
9
|
5
|
2
|
6
|
8
|
3
|
3
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Steel Mfg. Co., Ltd. | 130 |
6 |
| MicroVention, Inc. | 648 |
5 |
| NHK Spring Co., Ltd. | 1983 |
5 |
| Nittoku Co., Ltd. | 67 |
3 |
| Siemens AG | 24020 |
2 |
| Mitsubishi Electric Corporation | 48048 |
2 |
| Adolf Schnorr GmbH & Co. KG | 11 |
2 |
| Dae Won Kang Up Co., Ltd. | 18 |
2 |
| Medical Energetics Ltd. | 39 |
2 |
| Nittoku Engineering Co., Ltd. | 65 |
2 |
| Orii & MEC Corporation | 5 |
2 |
| Spühl GmbH | 42 |
2 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 28 |
2 |
| Hitachi Astemo, Ltd. | 6407 |
2 |
| SNECMA S.A. | 1146 |
1 |
| Toyota Motor Corporation | 35813 |
1 |
| The Boeing Company | 20163 |
1 |
| Denso Corporation | 25579 |
1 |
| Medtronic Vascular, Inc. | 1460 |
1 |
| Murata Manufacturing Co., Ltd. | 25758 |
1 |
| Other owners | 33 |