- 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: 4286
10-year publication summary
|
444
|
505
|
535
|
484
|
422
|
294
|
320
|
264
|
258
|
123
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hanon Systems | 1894 |
145 |
| Valeo Systemes Thermiques | 2696 |
144 |
| MAHLE International GmbH | 2743 |
102 |
| Mitsubishi Electric Corporation | 45811 |
75 |
| Hamilton Sundstrand Corporation | 4832 |
62 |
| Denso Corporation | 24120 |
56 |
| LG Electronics Inc. | 72473 |
49 |
| Daikin Industries, Ltd. | 9957 |
47 |
| General Electric Company | 13829 |
46 |
| Dana Canada Corporation | 273 |
45 |
| Rtx Corporation | 9297 |
44 |
| Hyundai Motor Company | 21626 |
43 |
| Modine Manufacturing Company | 307 |
43 |
| Carrier Corporation | 4356 |
40 |
| Alfa Laval Corporate AB | 1302 |
39 |
| Kyungdong Navien Co., Ltd. | 603 |
36 |
| The Boeing Company | 20013 |
29 |
| Safran Aircraft Engines | 6237 |
28 |
| Johnson Controls Tyco IP Holdings LLP | 657 |
27 |
| Toyota Motor Corporation | 31451 |
25 |
| Other owners | 3161 |