- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
Patent holdings for IPC class F04C 18/00
Total number of patents in this class: 476
10-year publication summary
|
31
|
48
|
36
|
30
|
30
|
23
|
29
|
26
|
14
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 73531 |
57 |
| Copeland LP | 700 |
39 |
| Daikin Industries, Ltd. | 10070 |
20 |
| Bitzer Kuehlmaschinenbau GmbH | 153 |
11 |
| GREE Electric Appliances, Inc. of Zhuhai | 3251 |
10 |
| Mitsubishi Electric Corporation | 46397 |
9 |
| Edwards Limited | 792 |
9 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1464 |
9 |
| Trane International Inc. | 1191 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8783 |
7 |
| Hanon Systems | 1972 |
7 |
| Forum US, Inc. | 338 |
6 |
| Panasonic Intellectual Property Management Co., Ltd. | 31806 |
5 |
| Hamilton Sundstrand Corporation | 4907 |
5 |
| Carrier Corporation | 4294 |
5 |
| Anest Iwata Corporation | 153 |
5 |
| MAHLE International GmbH | 2784 |
5 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 514 |
5 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 891 |
5 |
| Kobelco Compressors Corporation | 64 |
5 |
| Other owners | 244 |