- 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 28/12 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
Patent holdings for IPC class F04C 28/12
Total number of patents in this class: 138
10-year publication summary
5
|
9
|
9
|
11
|
13
|
13
|
13
|
9
|
9
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
13 |
Daikin Industries, Ltd. | 9495 |
12 |
Johnson Controls Tyco IP Holdings LLP | 1584 |
10 |
Trane International Inc. | 1123 |
9 |
Johnson Controls Technology Company | 1522 |
8 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
8 |
Bitzer Kuehlmaschinenbau GmbH | 140 |
6 |
Bitzer Kühlmaschinenbau GmbH | 176 |
5 |
Vilter Manufacturing LLC | 20 |
4 |
Copeland LP | 656 |
4 |
LG Electronics Inc. | 69257 |
3 |
Carrier Corporation | 4759 |
3 |
Sullair, LLC | 44 |
3 |
Ingersoll-Rand Industrial U.S., Inc. | 498 |
3 |
Guangdong Meizhi Compressor Co., Ltd. | 157 |
2 |
Hansen Engine Corporation | 13 |
2 |
Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd. | 28 |
2 |
Safran Aircraft Engines | 5739 |
2 |
THK Co., Ltd. | 1206 |
2 |
Xi'an Jiaotong University | 579 |
2 |
Other owners | 35 |