- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means for damping vibration
- F16F 1/20 - Leaf springs with layers, e.g. anti-friction layers, or with rollers between the leaves
Patent holdings for IPC class F16F 1/20
Total number of patents in this class: 54
10-year publication summary
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0
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1
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3
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2
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4
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9
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0
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4
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0
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0
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| 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 |
6 |
| Rassini - NHK Autopeças Ltda. | 3 |
3 |
| Sumitomo Electric Industries, Ltd. | 14131 |
2 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
2 |
| AutoNetworks Technologies, Ltd. | 5809 |
2 |
| FM Energie GmbH & Co. KG | 19 |
2 |
| Lord Corporation | 484 |
2 |
| Oiles Corporation | 515 |
2 |
| Taylor Devices, Inc. | 14 |
2 |
| Apple Inc. | 50209 |
1 |
| Halliburton Energy Services, Inc. | 20165 |
1 |
| Centre National de La Recherche Scientifique | 9632 |
1 |
| Raytheon Company | 8535 |
1 |
| Hyundai Motor Company | 19021 |
1 |
| Hyundai Dymos Inc. | 113 |
1 |
| JTEKT Corporation | 2423 |
1 |
| Kia Motors Corporation | 7946 |
1 |
| Acergy France SAS | 124 |
1 |
| Airbus Defence and Space, S.A. | 88 |
1 |
| Braun GmbH | 1290 |
1 |
| Other owners | 20 |