- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 28/28 - Safety arrangementsMonitoring
Patent holdings for IPC class F04C 28/28
Total number of patents in this class: 385
10-year publication summary
|
31
|
40
|
30
|
39
|
29
|
35
|
21
|
24
|
25
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Copeland LP | 694 |
23 |
| Mitsubishi Electric Corporation | 47352 |
21 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1504 |
21 |
| Atlas Copco Airpower, naamloze vennootschap | 1056 |
17 |
| Daikin Industries, Ltd. | 10212 |
16 |
| LG Electronics Inc. | 74388 |
14 |
| Edwards Limited | 791 |
11 |
| Hanon Systems | 2035 |
11 |
| Leybold GmbH | 294 |
10 |
| Toyota Industries Corporation | 1169 |
9 |
| Pfeiffer Vacuum | 174 |
8 |
| Bitzer Kuehlmaschinenbau GmbH | 156 |
7 |
| Emerson Climate Technologies, Inc. | 297 |
6 |
| Trane International Inc. | 1206 |
6 |
| Carrier Corporation | 3979 |
5 |
| GREE Electric Appliances, Inc. of Zhuhai | 3268 |
5 |
| Lennox Industries Inc. | 1090 |
5 |
| Sanden Corporation | 989 |
5 |
| Samsung Electronics Co., Ltd. | 151485 |
4 |
| Agilent Technologies, Inc. | 2652 |
4 |
| Other owners | 177 |