- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means for damping vibration
- F16F 9/28 - Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with one or more cylinders, each having a single working space closed by a piston or plunger with two parallel cylinders and with the two pistons or plungers connected together
Patent holdings for IPC class F16F 9/28
Total number of patents in this class: 21
10-year publication summary
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3
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2
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1
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2
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1
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1
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1
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1
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0
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2
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Oshkosh Defense, LLC | 159 |
5 |
| Hemscheidt Fahrwerktechnik GmbH & Co. KG | 12 |
2 |
| Pneumatic Servo Controls Ltd. | 7 |
2 |
| Hitachi Automotive Systems, Ltd. | 3970 |
1 |
| Komatsu Ltd. | 4265 |
1 |
| Bell Helicopter Textron Inc. | 1122 |
1 |
| Hutchinson Aerospace & Industry, Inc. | 11 |
1 |
| Kayaba Industry Co., Ltd. | 376 |
1 |
| Mammoet Holding B.V. | 34 |
1 |
| Nippon Steel Corporation | 5649 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
1 |
| University of Technology, Sydney | 105 |
1 |
| Safran Landing Systems UK Ltd | 165 |
1 |
| The Skydyne Company | 4 |
1 |
| Hitachi Astemo, Ltd. | 5618 |
1 |
| Other owners | 0 |