- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/42 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
Patent holdings for IPC class F28F 1/42
Total number of patents in this class: 289
10-year publication summary
|
15
|
32
|
33
|
34
|
20
|
33
|
15
|
12
|
10
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wieland-Werke AG | 324 |
29 |
| Mitsubishi Electric Corporation | 44738 |
14 |
| AIC S.A. | 50 |
8 |
| Hanon Systems | 1814 |
7 |
| New Power Concepts LLC | 27 |
6 |
| Valeo Systemes Thermiques | 2597 |
6 |
| Denso Corporation | 23721 |
5 |
| Uop LLC | 4187 |
5 |
| MAHLE International GmbH | 2690 |
5 |
| Hamilton Sundstrand Corporation | 4719 |
4 |
| Carrier Corporation | 4444 |
4 |
| GREE Electric Appliances, Inc. of Zhuhai | 3149 |
4 |
| UACJ Corporation | 666 |
4 |
| LG Electronics Inc. | 70898 |
3 |
| Behr GmbH & Co. KG | 354 |
3 |
| Dometic Sweden AB | 511 |
3 |
| Trane International Inc. | 1149 |
3 |
| Rtx Corporation | 9077 |
3 |
| Samsung Electronics Co., Ltd. | 138518 |
2 |
| General Electric Company | 17803 |
2 |
| Other owners | 169 |