- 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 29/02 - Lubrication; Lubricant separation
Patent holdings for IPC class F04C 29/02
Total number of patents in this class: 1625
10-year publication summary
105
|
122
|
133
|
179
|
157
|
155
|
154
|
127
|
146
|
46
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
LG Electronics Inc. | 69257 |
140 |
Daikin Industries, Ltd. | 9495 |
113 |
Mitsubishi Electric Corporation | 43934 |
103 |
Atlas Copco Airpower, naamloze vennootschap | 915 |
70 |
Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
52 |
Copeland LP | 656 |
41 |
Emerson Climate Technologies (Suzhou) Co., Ltd. | 172 |
39 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
36 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
35 |
Ingersoll-Rand Industrial U.S., Inc. | 498 |
30 |
Panasonic Corporation | 20786 |
29 |
Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
28 |
Samsung Electronics Co., Ltd. | 131630 |
27 |
Hanon Systems | 1632 |
27 |
Bitzer Kuehlmaschinenbau GmbH | 140 |
22 |
Sanden Corporation | 859 |
22 |
Emerson Climate Technologies, Inc. | 308 |
21 |
Danfoss Commercial Compressors | 88 |
20 |
Trane International Inc. | 1123 |
19 |
Mitsubishi Heavy Industries Thermal Systems, Ltd. | 786 |
19 |
Other owners | 732 |