- All sections
- B - Performing operations; transporting
- 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: 81
10-year publication summary
|
8
|
8
|
9
|
5
|
2
|
6
|
8
|
3
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Steel Mfg. Co., Ltd. | 137 |
6 |
| MicroVention, Inc. | 555 |
5 |
| NHK Spring Co., Ltd. | 1657 |
5 |
| Nittoku Co., Ltd. | 47 |
3 |
| Siemens AG | 24990 |
2 |
| Mitsubishi Electric Corporation | 43934 |
2 |
| Adolf Schnorr GmbH & Co. KG | 11 |
2 |
| Dae Won Kang Up Co., Ltd. | 19 |
2 |
| Medical Energetics Ltd. | 43 |
2 |
| Nittoku Engineering Co., Ltd. | 68 |
2 |
| Orii & MEC Corporation | 5 |
2 |
| Spühl GmbH | 36 |
2 |
| Asahi-Seiki Manufacturing Co.,Ltd. | 22 |
2 |
| Hitachi Astemo, Ltd. | 5618 |
2 |
| SNECMA S.A. | 1160 |
1 |
| Toyota Motor Corporation | 28582 |
1 |
| The Boeing Company | 19843 |
1 |
| Denso Corporation | 23338 |
1 |
| Medtronic Vascular, Inc. | 1529 |
1 |
| Murata Manufacturing Co., Ltd. | 22355 |
1 |
| Other owners | 36 |