- 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: 1100
10-year publication summary
97
|
146
|
119
|
103
|
80
|
82
|
60
|
37
|
27
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Asia Vital Components Co., Ltd. | 413 |
30 |
International Business Machines Corporation | 60644 |
19 |
Microsoft Technology Licensing, LLC | 51439 |
18 |
Nortek Air Solutions Canada, Inc. | 114 |
16 |
Cooler Master Co., Ltd. | 191 |
13 |
Shinko Electric Industries Co., Ltd. | 1186 |
11 |
The Furukawa Electric Co., Ltd. | 3486 |
11 |
Toyota Motor Corporation | 28582 |
10 |
Denso Corporation | 23338 |
10 |
Malta Inc. | 107 |
10 |
General Electric Company | 18133 |
9 |
Raytheon Company | 8535 |
9 |
Delta Electronics, Inc. | 2401 |
9 |
Mainstream Engineering Corporation | 143 |
9 |
Vistara Technology Growth Fund III Limited Partnership, by its General Partner, Vistara General Partner III Inc. | 21 |
9 |
Oracle America, Inc. | 3928 |
8 |
Northrop Grumman Systems Corporation | 2940 |
8 |
Hamilton Sundstrand Corporation | 4525 |
8 |
Champ Tech Optical (Foshan) Corporation | 92 |
8 |
The Boeing Company | 19843 |
7 |
Other owners | 868 |