- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/08 - 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
Patent holdings for IPC class F04C 18/08
Total number of patents in this class: 223
10-year publication summary
|
22
|
18
|
26
|
21
|
20
|
21
|
14
|
9
|
18
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Edwards Limited | 802 |
19 |
| Atlas Copco Airpower, naamloze vennootschap | 985 |
15 |
| Industrial Technologies and Services, LLC | 168 |
11 |
| Leybold GmbH | 299 |
10 |
| Kaeser KOMPRESSOREN SE | 177 |
8 |
| Eaton Intelligent Power Limited | 6308 |
7 |
| Carrier Corporation | 4451 |
5 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1406 |
5 |
| Eaton Corporation | 1831 |
4 |
| Toyota Industries Corporation | 1061 |
4 |
| Ateliers Busch SA | 53 |
4 |
| Jurop S.p.A. | 16 |
4 |
| Pfeiffer Vacuum | 168 |
4 |
| Johnson Controls Tyco IP Holdings LLP | 714 |
4 |
| Gardner Denver, LLC | 17 |
4 |
| GREE Electric Appliances, Inc. of Zhuhai | 3156 |
3 |
| Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd. | 37 |
3 |
| Oerlikon Leybold Vacuum GmbH | 111 |
3 |
| Sterling Industry Consult GmbH | 20 |
3 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 495 |
3 |
| Other owners | 100 |