- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means for damping vibration
- F16F 1/02 - Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
Patent holdings for IPC class F16F 1/02
Total number of patents in this class: 549
10-year publication summary
|
39
|
51
|
54
|
57
|
67
|
48
|
37
|
32
|
34
|
10
|
| 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 |
67 |
| Robert Bosch GmbH | 40953 |
17 |
| Chuo Hatsujo Kabushiki Kaisha | 124 |
17 |
| Nippon Steel Corporation | 5649 |
14 |
| Raytheon Company | 8535 |
13 |
| Mitsubishi Steel Mfg. Co., Ltd. | 137 |
13 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
10 |
| ThyssenKrupp AG | 3086 |
10 |
| Sumitomo Electric Industries, Ltd. | 14131 |
9 |
| Hutchinson Technology Incorporated | 310 |
8 |
| ThyssenKrupp Federn und Stabilisatoren GmbH | 46 |
8 |
| NV Bekaert SA | 750 |
7 |
| Nippon Steel SG Wire Co., Ltd. | 13 |
7 |
| Silgan Dispensing Systems Corporation | 319 |
6 |
| Koninklijke Philips N.V. | 22975 |
5 |
| Dreamwell, Ltd. | 401 |
5 |
| Toppan Inc. | 746 |
5 |
| JFE Steel Corporation | 6067 |
4 |
| King Saud University | 332 |
4 |
| Nivarox-FAR S.A. | 265 |
4 |
| Other owners | 316 |