- 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: 1107
10-year publication summary
|
86
|
112
|
129
|
118
|
102
|
124
|
76
|
69
|
73
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Alfa Laval Corporate AB | 1305 |
111 |
| Valeo Systemes Thermiques | 2600 |
57 |
| Mitsubishi Electric Corporation | 44851 |
34 |
| SWEP International AB | 107 |
34 |
| Hanon Systems | 1819 |
20 |
| Denso Corporation | 23769 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
18 |
| Kyungdong Navien Co., Ltd. | 594 |
17 |
| Daikin Industries, Ltd. | 9838 |
16 |
| Dana Canada Corporation | 276 |
15 |
| Hamilton Sundstrand Corporation | 4728 |
13 |
| Asia Vital Components Co., Ltd. | 402 |
13 |
| Rtx Corporation | 9109 |
12 |
| Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. | 89 |
10 |
| International Business Machines Corporation | 60129 |
9 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10692 |
9 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
9 |
| MAHLE International GmbH | 2705 |
9 |
| Unison Industries, LLC | 205 |
9 |
| General Electric Company | 17789 |
8 |
| Other owners | 665 |