- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 39/12 - Casings; Cylinders; Cylinder heads; Fluid connections
Patent holdings for IPC class F04B 39/12
Total number of patents in this class: 1619
10-year publication summary
|
138
|
174
|
176
|
176
|
183
|
133
|
147
|
110
|
118
|
40
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
164 |
| Arcelik A.S. | 3617 |
60 |
| Daikin Industries, Ltd. | 9495 |
40 |
| Whirlpool S.A. | 377 |
40 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 786 |
39 |
| Copeland LP | 656 |
31 |
| Toyota Industries Corporation | 1010 |
28 |
| Hanon Systems | 1632 |
26 |
| Mitsubishi Electric Corporation | 43934 |
24 |
| Sanden Corporation | 859 |
23 |
| Embraco - Indústria de Compressores e Soluções EM Refrigeração Ltda. | 138 |
23 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
21 |
| Robert Bosch GmbH | 40953 |
20 |
| Sanden Automotive Components Corporation | 158 |
20 |
| Panasonic Appliances Refrigeration Devices Singapore | 89 |
17 |
| Black & Decker, Inc. | 2402 |
16 |
| ACC Austria GmbH | 26 |
16 |
| Anhui Meizhi Compressor Co., Ltd. | 49 |
15 |
| Denso Corporation | 23338 |
14 |
| Carrier Corporation | 4759 |
14 |
| Other owners | 968 |