- 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 18/00 - Rotary-piston pumps specially adapted for elastic fluids
Patent holdings for IPC class F04C 18/00
Total number of patents in this class: 507
10-year publication summary
33
|
31
|
48
|
36
|
30
|
30
|
23
|
22
|
17
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
LG Electronics Inc. | 69257 |
59 |
Copeland LP | 656 |
39 |
Daikin Industries, Ltd. | 9495 |
24 |
Bitzer Kuehlmaschinenbau GmbH | 140 |
11 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
10 |
Mitsubishi Electric Corporation | 43934 |
9 |
Trane International Inc. | 1123 |
9 |
Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
8 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
7 |
Carrier Corporation | 4759 |
7 |
Anest Iwata Corporation | 168 |
7 |
Edwards Limited | 764 |
7 |
Hanon Systems | 1632 |
7 |
Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
7 |
Forum US, Inc. | 315 |
6 |
Sanden Corporation | 859 |
6 |
Mitsubishi Heavy Industries Thermal Systems, Ltd. | 786 |
6 |
Hamilton Sundstrand Corporation | 4525 |
5 |
Toyota Industries Corporation | 1010 |
5 |
MAHLE International GmbH | 2670 |
5 |
Other owners | 263 |