- All sections
- B - Performing operations; transporting
- B21F - Working or processing of metal wire
- B21F 35/04 - Making flat springs, e.g. sinus springs
Patent holdings for IPC class B21F 35/04
Total number of patents in this class: 10
10-year publication summary
|
0
|
5
|
1
|
4
|
1
|
0
|
1
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| L & P Property Management Company | 970 |
4 |
| BorgWarner Inc. | 2604 |
3 |
| Adolf Schnorr GmbH & Co. KG | 11 |
2 |
| NHK Spring Co., Ltd. | 1657 |
1 |
| Other owners | 0 |