- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F03C - Positive-displacement engines driven by liquids
- F03C 2/22 - Rotary-piston engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
Patent holdings for IPC class F03C 2/22
Total number of patents in this class: 10
10-year publication summary
|
2
|
2
|
0
|
1
|
0
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1
|
0
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0
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1
|
0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21251 |
3 |
| Baker Hughes Incorporated | 5009 |
1 |
| Heishin Ltd. | 96 |
1 |
| Kanagawa Kiki Kogyo Co., Ltd. | 9 |
1 |
| Woodward, Inc. | 667 |
1 |
| Jiangsu Hengli Hydraulic Technology Co., Ltd. | 10 |
1 |
| Zhenjiang Dali Hydraulic Motor Co., Ltd. | 7 |
1 |
| Danfoss Power Solutions (Jiangsu) Co., Ltd. | 9 |
1 |
| Other owners | 0 |