- 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 7/04 - 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 spirally coiled
Patent holdings for IPC class F28D 7/04
Total number of patents in this class: 131
10-year publication summary
|
10
|
9
|
16
|
5
|
14
|
10
|
5
|
8
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Louisiana Eco Green, L.L.C. | 13 |
11 |
| Fluid Handling LLC | 256 |
8 |
| Reaction Engines Ltd | 47 |
8 |
| Valeo Systemes Thermiques | 2809 |
7 |
| Sanden Holdings Corporation | 208 |
4 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10993 |
3 |
| Del Nova VIS S.r.l | 7 |
3 |
| Alfa Laval Corporate AB | 1328 |
2 |
| Herlogas, S.A. | 2 |
2 |
| ICECOLDNOW, Inc. | 9 |
2 |
| Koninklijke Douwe Egberts B.V. | 857 |
2 |
| Linde Aktiengesellschaft | 1435 |
2 |
| Trane Air Conditioning Systems (China) Co., Ltd. | 44 |
2 |
| Unison Industries, LLC | 211 |
2 |
| Woodside Energy Technologies Pty Ltd. | 74 |
2 |
| X Development LLC | 1370 |
2 |
| Rtx Corporation | 9851 |
2 |
| Clada S.r.l. | 20 |
2 |
| General Electric Company | 13819 |
1 |
| Panasonic Corporation | 19680 |
1 |
| Other owners | 63 |