- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/18 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
Patent holdings for IPC class F04C 18/18
Total number of patents in this class: 62
10-year publication summary
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6
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6
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6
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4
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2
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2
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2
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5
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3
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3
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Orion Machinery Co., Ltd. | 44 |
4 |
| ULVAC, Inc. | 1379 |
4 |
| Eaton Corporation | 1818 |
3 |
| Anest Iwata Corporation | 154 |
3 |
| Kashiyama Industries, Ltd. | 18 |
3 |
| Leybold GmbH | 295 |
3 |
| Eaton Intelligent Power Limited | 5992 |
3 |
| Caterpillar Inc. | 9579 |
2 |
| Daikin Industries, Ltd. | 10027 |
2 |
| Hamilton Sundstrand Corporation | 4891 |
2 |
| Ebara Corporation | 2174 |
2 |
| Danfoss Power Solutions GmbH & Co. OHG | 73 |
2 |
| Hitachi, Ltd. | 15513 |
1 |
| Carrier Corporation | 4296 |
1 |
| Ateliers Busch SA | 51 |
1 |
| Concentric Birmingham Limited | 6 |
1 |
| Danfoss Power Solutions S.r.l. | 5 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3246 |
1 |
| Japan Chemical Engineering & Machinery Co., Ltd. | 2 |
1 |
| Jurop S.p.A. | 16 |
1 |
| Other owners | 21 |