- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
Patent holdings for IPC class F28F 3/04
Total number of patents in this class: 1066
10-year publication summary
|
82
|
86
|
112
|
129
|
118
|
102
|
122
|
71
|
68
|
23
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Alfa Laval Corporate AB | 1265 |
103 |
| Valeo Systemes Thermiques | 2471 |
47 |
| SWEP International AB | 109 |
35 |
| Mitsubishi Electric Corporation | 43934 |
32 |
| Kyungdong Navien Co., Ltd. | 566 |
21 |
| Denso Corporation | 23338 |
19 |
| Hanon Systems | 1632 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
17 |
| Daikin Industries, Ltd. | 9495 |
15 |
| Dana Canada Corporation | 284 |
15 |
| Hamilton Sundstrand Corporation | 4525 |
13 |
| Asia Vital Components Co., Ltd. | 413 |
13 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
11 |
| International Business Machines Corporation | 60644 |
10 |
| Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. | 89 |
10 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
9 |
| MAHLE International GmbH | 2670 |
9 |
| Unison Industries, LLC | 195 |
9 |
| Danfoss A/S | 1259 |
9 |
| Rtx Corporation | 8674 |
9 |
| Other owners | 641 |