- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28D - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contactheat storage plants or apparatus in general
- F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
Patent holdings for IPC class F28D 21/00
Total number of patents in this class: 4732
10-year publication summary
|
505
|
535
|
486
|
422
|
297
|
330
|
308
|
291
|
282
|
211
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hanon Systems | 2125 |
163 |
| Valeo Systemes Thermiques | 2821 |
153 |
| MAHLE International GmbH | 2920 |
108 |
| Mitsubishi Electric Corporation | 48172 |
79 |
| Hamilton Sundstrand Corporation | 5014 |
67 |
| Denso Corporation | 25645 |
57 |
| LG Electronics Inc. | 75855 |
54 |
| Daikin Industries, Ltd. | 10502 |
51 |
| Rtx Corporation | 10127 |
49 |
| General Electric Company | 13915 |
48 |
| Hyundai Motor Company | 24808 |
46 |
| Dana Canada Corporation | 267 |
45 |
| Modine Manufacturing Company | 302 |
45 |
| Alfa Laval Corporate AB | 1344 |
42 |
| Carrier Corporation | 3947 |
40 |
| Kyungdong Navien Co., Ltd. | 646 |
38 |
| Samsung Electronics Co., Ltd. | 158442 |
33 |
| Tyco Fire & Security GmbH | 3672 |
33 |
| The Boeing Company | 20186 |
29 |
| Safran Aircraft Engines | 6727 |
29 |
| Other owners | 3523 |