- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
Patent holdings for IPC class F04C 23/00
Total number of patents in this class: 1667
10-year publication summary
|
142
|
142
|
175
|
137
|
124
|
115
|
118
|
99
|
62
|
56
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 73772 |
198 |
| Copeland LP | 693 |
112 |
| Daikin Industries, Ltd. | 10166 |
93 |
| Mitsubishi Electric Corporation | 46926 |
72 |
| Edwards Limited | 792 |
61 |
| Toyota Industries Corporation | 1153 |
59 |
| Toshiba Carrier Corporation | 490 |
53 |
| Fujitsu General Limited | 627 |
41 |
| Panasonic Intellectual Property Management Co., Ltd. | 32457 |
39 |
| Danfoss Commercial Compressors | 90 |
37 |
| Pfeiffer Vacuum | 168 |
37 |
| Bitzer Kuehlmaschinenbau GmbH | 154 |
34 |
| Atlas Copco Airpower, naamloze vennootschap | 1040 |
32 |
| GREE Electric Appliances, Inc. of Zhuhai | 3254 |
32 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 918 |
29 |
| Samsung Electronics Co., Ltd. | 149087 |
27 |
| Trane International Inc. | 1201 |
25 |
| Mitsubishi Heavy Industries, Ltd. | 8875 |
22 |
| GREE Green Refrigeration Technology Center Co., Ltd. of Zhuhai | 164 |
22 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1483 |
22 |
| Other owners | 620 |