- 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 7/02 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
Patent holdings for IPC class F28D 7/02
Total number of patents in this class: 655
10-year publication summary
|
71
|
68
|
51
|
36
|
45
|
29
|
33
|
37
|
30
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Linde Aktiengesellschaft | 1421 |
31 |
| Mitsubishi Electric Corporation | 48048 |
22 |
| Hamilton Sundstrand Corporation | 5014 |
15 |
| Linde GmbH | 1361 |
10 |
| Zhenhai Petrochemical Jianan Engineering Co., Ltd. | 25 |
9 |
| Fulton Group N.A., Inc. | 54 |
8 |
| Sermeta | 34 |
8 |
| General Electric Company | 13910 |
7 |
| Daikin Industries, Ltd. | 10504 |
7 |
| Condevo S.p.A. | 20 |
7 |
| Umicore AG & Co. KG | 854 |
7 |
| New Power Concepts LLC | 26 |
6 |
| LG Electronics Inc. | 75818 |
5 |
| Shell Internationale Research Maatschappij B.V. | 3398 |
5 |
| The Boeing Company | 20163 |
5 |
| Air Products and Chemicals, Inc. | 1474 |
5 |
| Alfa Laval Corporate AB | 1336 |
5 |
| Fluid Handling LLC | 253 |
5 |
| Intellihot, Inc. | 128 |
5 |
| M. Technique Co., Ltd. | 252 |
5 |
| Other owners | 478 |