- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F15B - Systems acting by means of fluids in generalfluid-pressure actuators, e.g. servomotorsdetails of fluid-pressure systems, not otherwise provided for
- F15B 9/08 - Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
Patent holdings for IPC class F15B 9/08
Total number of patents in this class: 43
10-year publication summary
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1
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3
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4
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3
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3
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3
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0
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1
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Caterpillar Inc. | 9166 |
4 |
| Volvo Construction Equipment AB | 1193 |
4 |
| Nikon Corporation | 7123 |
3 |
| Deere & Company | 7344 |
2 |
| ZF Friedrichshafen AG | 7028 |
2 |
| Komatsu Ltd. | 4418 |
2 |
| Doosan Infracore Co., Ltd. | 309 |
2 |
| Monkey Pumps, LLC | 7 |
2 |
| Woodward, Inc. | 632 |
2 |
| Schlumberger Technology Corporation | 10263 |
1 |
| Halliburton Energy Services, Inc. | 20438 |
1 |
| Hitachi Construction Machinery Co., Ltd. | 2566 |
1 |
| Beijing Research Institute of Automation for Machinery Industry | 3 |
1 |
| Caterpillar Japan Ltd. | 37 |
1 |
| Hydro-Gear Limited Partnership | 345 |
1 |
| Hydro-Quebec | 644 |
1 |
| Interpump Hydraulics S.p.A. | 17 |
1 |
| JL Marine Systems, Inc. | 40 |
1 |
| Nabtesco Corporation | 883 |
1 |
| Ningxia Yinchuan Dahe CNC Machine Co., Ltd. | 3 |
1 |
| Other owners | 9 |