- All sections
- B - Performing operationstransporting
- 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: 11
10-year publication summary
|
1
|
3
|
1
|
0
|
1
|
0
|
0
|
0
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BorgWarner Inc. | 2584 |
3 |
| L & P Property Management Company | 932 |
3 |
| Adolf Schnorr GmbH & Co. KG | 11 |
2 |
| Frisimos, Ltd. | 16 |
1 |
| NHK Spring Co., Ltd. | 1936 |
1 |
| Smalley Steel Ring Company | 64 |
1 |
| Other owners | 0 |