- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 13/08 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
Patent holdings for IPC class F28F 13/08
Total number of patents in this class: 398
10-year publication summary
|
36
|
50
|
35
|
35
|
42
|
34
|
32
|
29
|
15
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamilton Sundstrand Corporation | 4902 |
14 |
| Mitsubishi Electric Corporation | 46295 |
13 |
| Acer Incorporated | 2055 |
9 |
| Rtx Corporation | 9420 |
8 |
| Safran Aero Boosters SA | 183 |
7 |
| Valeo Systemes Thermiques | 2737 |
7 |
| General Electric Company | 13807 |
6 |
| Denso Corporation | 24387 |
6 |
| Daikin Industries, Ltd. | 10047 |
6 |
| Dow Global Technologies LLC | 10386 |
6 |
| Intergas Heating Assets B.V. | 41 |
6 |
| Sumitomo Precision Products Co., Ltd. | 302 |
6 |
| The Boeing Company | 20098 |
4 |
| AIC S.A. | 48 |
4 |
| Goodman Manufacturing Company, L.P., Goodman Holding Company, a Texas corporation, its General Partner | 140 |
4 |
| IHI Corporation | 3449 |
4 |
| Safran Aero Boosters | 103 |
4 |
| SAFRAN S.A. | 623 |
3 |
| International Business Machines Corporation | 61353 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 31696 |
3 |
| Other owners | 275 |