- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 323
10-year publication summary
|
32
|
32
|
20
|
25
|
18
|
22
|
14
|
12
|
5
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2810 |
18 |
| Denso Corporation | 25183 |
16 |
| MAHLE International GmbH | 2883 |
14 |
| Mitsubishi Electric Corporation | 47602 |
10 |
| Lockheed Martin Corporation | 3279 |
10 |
| Daikin Industries, Ltd. | 10384 |
9 |
| Hanon Systems | 2069 |
9 |
| T.RAD Co., Ltd. | 105 |
9 |
| Alfa Laval Olmi S.p.A | 22 |
6 |
| Modine Manufacturing Company | 306 |
6 |
| Behr GmbH & Co. KG | 254 |
5 |
| Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. | 89 |
5 |
| Noritz Corporation | 288 |
5 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 492 |
5 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 642 |
5 |
| Alfa Laval Corporate AB | 1329 |
4 |
| Valeo Termico, S.A. | 52 |
4 |
| SPX Flow Technology Danmark A/S | 51 |
4 |
| Viking Vessel Holdings, LLC | 4 |
4 |
| C.I. Kasei Company, Limited | 38 |
3 |
| Other owners | 172 |