- 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 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: 1106
10-year publication summary
|
142
|
118
|
101
|
78
|
83
|
61
|
45
|
34
|
33
|
18
|
| 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. | 418 |
30 |
| International Business Machines Corporation | 61694 |
19 |
| Microsoft Technology Licensing, LLC | 54162 |
18 |
| Nortek Air Solutions Canada, Inc. | 123 |
18 |
| Cooler Master Co., Ltd. | 235 |
14 |
| Shinko Electric Industries Co., Ltd. | 1216 |
12 |
| The Furukawa Electric Co., Ltd. | 3704 |
11 |
| Denso Corporation | 24692 |
10 |
| Malta Inc. | 125 |
10 |
| Toyota Motor Corporation | 33275 |
9 |
| Raytheon Company | 8399 |
9 |
| Hamilton Sundstrand Corporation | 4950 |
9 |
| Mainstream Engineering Corporation | 153 |
9 |
| The Boeing Company | 20161 |
8 |
| Oracle America, Inc. | 2933 |
8 |
| Delta Electronics, Inc. | 2665 |
8 |
| Champ Tech Optical (Foshan) Corporation | 103 |
8 |
| General Electric Company | 13859 |
7 |
| ABB Schweiz AG | 7139 |
7 |
| Google LLC | 42942 |
7 |
| Other owners | 875 |