- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/20 - 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 dissimilar tooth forms
Patent holdings for IPC class F04C 18/20
Total number of patents in this class: 26
10-year publication summary
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1
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2
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2
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3
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2
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2
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3
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2
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1
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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
|
|---|---|---|
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
3 |
| Kodivac Ltd. | 3 |
3 |
| Gardner Denver, LLC | 20 |
3 |
| Industrial Technologies and Services, LLC | 83 |
3 |
| Carrier Corporation | 4759 |
2 |
| Kaeser KOMPRESSOREN SE | 166 |
2 |
| Mayekawa Mfg. Co., Ltd. | 327 |
2 |
| Sprintex AustraLASIA Pty Ltd | 6 |
2 |
| Anest Iwata Corporation | 168 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
1 |
| Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd. | 28 |
1 |
| Yamada Manufacturing Co., Ltd. | 141 |
1 |
| Korea Airro Co., Ltd | 1 |
1 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
1 |
| Other owners | 0 |