- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 9/18 - Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Patent holdings for IPC class F28F 9/18
Total number of patents in this class: 333
10-year publication summary
|
32
|
29
|
34
|
36
|
21
|
27
|
19
|
26
|
13
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2471 |
20 |
| Denso Corporation | 23338 |
15 |
| MAHLE International GmbH | 2670 |
15 |
| Mitsubishi Electric Corporation | 43934 |
11 |
| Lockheed Martin Corporation | 3406 |
10 |
| Behr GmbH & Co. KG | 437 |
9 |
| Hanon Systems | 1632 |
9 |
| T.RAD Co., Ltd. | 101 |
9 |
| Daikin Industries, Ltd. | 9495 |
7 |
| Alfa Laval Olmi S.p.A | 22 |
6 |
| Modine Manufacturing Company | 305 |
6 |
| Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. | 89 |
5 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 475 |
5 |
| Alfa Laval Corporate AB | 1265 |
4 |
| Noritz Corporation | 255 |
4 |
| Valeo Termico, S.A. | 55 |
4 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 394 |
4 |
| SPX Flow Technology Danmark A/S | 50 |
4 |
| Viking Vessel Holdings, LLC | 4 |
4 |
| ATI Properties LLC | 202 |
3 |
| Other owners | 179 |