- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means for damping vibration
- F16F 1/387 - Springs made of material having high internal friction with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin comprising means for modifying the rigidity in particular directions
Patent holdings for IPC class F16F 1/387
Total number of patents in this class: 153
10-year publication summary
|
11
|
8
|
17
|
25
|
26
|
12
|
4
|
12
|
7
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Riko Company Limited | 962 |
18 |
| Toyo Tire Corporation | 943 |
11 |
| Bridgestone Corporation | 7067 |
10 |
| Honda Motor Co., Ltd. | 24537 |
9 |
| Schaeffler Technologies AG & Co. KG | 8880 |
6 |
| Prospira Corporation | 160 |
6 |
| EFFBE GmbH | 11 |
5 |
| ContiTech Vibration Control GmbH | 101 |
4 |
| FM Energie GmbH & Co. KG | 19 |
4 |
| Yamashita Rubber Kabushiki Kaisha | 50 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
4 |
| Vibracoustic SE | 101 |
4 |
| Hendrickson USA, L.L.C. | 603 |
3 |
| Vibracoustic GmbH | 79 |
3 |
| Yamashita Rubber Co., Ltd. | 41 |
3 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 174 |
3 |
| Toyota Motor Corporation | 28582 |
2 |
| Hyundai Motor Company | 19021 |
2 |
| Aktiebolaget SKF | 2700 |
2 |
| Bell Helicopter Textron Inc. | 1122 |
2 |
| Other owners | 48 |