- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 29/02 - LubricationLubricant separation
Patent holdings for IPC class F04C 29/02
Total number of patents in this class: 1869
10-year publication summary
|
133
|
179
|
157
|
156
|
155
|
133
|
165
|
125
|
130
|
50
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75045 |
166 |
| Daikin Industries, Ltd. | 10393 |
137 |
| Mitsubishi Electric Corporation | 47625 |
112 |
| Atlas Copco Airpower, naamloze vennootschap | 1063 |
76 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1520 |
61 |
| GREE Electric Appliances, Inc. of Zhuhai | 3281 |
45 |
| Copeland LP | 694 |
40 |
| Panasonic Intellectual Property Management Co., Ltd. | 33602 |
39 |
| Emerson Climate Technologies (Suzhou) Co., Ltd. | 169 |
39 |
| Samsung Electronics Co., Ltd. | 154120 |
37 |
| Hanon Systems | 2069 |
37 |
| Ingersoll-Rand Industrial U.S., Inc. | 526 |
34 |
| Panasonic Corporation | 19577 |
30 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 520 |
29 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 966 |
25 |
| Danfoss Commercial Compressors | 94 |
24 |
| Bitzer Kuehlmaschinenbau GmbH | 156 |
23 |
| Danfoss (Tianjin) Ltd. | 107 |
23 |
| Trane International Inc. | 1216 |
23 |
| Guangdong Meizhi Compressor Co., Ltd. | 201 |
21 |
| Other owners | 848 |