- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28D - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact; heat storage plants or apparatus in general
- F28D 15/00 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls
Patent holdings for IPC class F28D 15/00
Total number of patents in this class: 1098
10-year publication summary
|
146
|
120
|
103
|
80
|
84
|
62
|
44
|
30
|
23
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Asia Vital Components Co., Ltd. | 402 |
29 |
| International Business Machines Corporation | 60075 |
20 |
| Microsoft Technology Licensing, LLC | 52891 |
18 |
| Nortek Air Solutions Canada, Inc. | 119 |
16 |
| Cooler Master Co., Ltd. | 207 |
14 |
| Shinko Electric Industries Co., Ltd. | 1186 |
11 |
| The Furukawa Electric Co., Ltd. | 3595 |
11 |
| Denso Corporation | 23721 |
10 |
| Malta Inc. | 109 |
10 |
| General Electric Company | 17803 |
9 |
| Toyota Motor Corporation | 30345 |
9 |
| Raytheon Company | 8438 |
9 |
| Mainstream Engineering Corporation | 148 |
9 |
| Vistara Technology Growth Fund III Limited Partnership, by its General Partner, Vistara General Partner III Inc. | 20 |
9 |
| The Boeing Company | 19901 |
8 |
| Oracle America, Inc. | 3460 |
8 |
| Delta Electronics, Inc. | 2503 |
8 |
| Hamilton Sundstrand Corporation | 4719 |
8 |
| Champ Tech Optical (Foshan) Corporation | 97 |
8 |
| Northrop Grumman Systems Corporation | 2921 |
7 |
| Other owners | 867 |