- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28C - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction
- F28C 3/04 - Other direct-contact heat-exchange apparatus the heat-exchange media both being liquids
Patent holdings for IPC class F28C 3/04
Total number of patents in this class: 45
10-year publication summary
|
2
|
3
|
7
|
1
|
1
|
1
|
4
|
4
|
2
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 13811 |
3 |
| LG Chem, Ltd. | 17598 |
3 |
| Société des Produits Nestlé S.A. | 9258 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42461 |
2 |
| Abaco Systems, Inc . | 31 |
2 |
| Adionics | 22 |
2 |
| Innovel 2000 Inc. | 2 |
2 |
| National University Corporation Tokyo University of Marine Science and Technology | 107 |
2 |
| Technion Research and Development Foundation Ltd. | 333 |
2 |
| Xenesys Inc. | 6 |
2 |
| 3m Innovative Properties Company | 17857 |
1 |
| Nestec S.A. | 2672 |
1 |
| The Regents of the University of California | 19868 |
1 |
| Lockheed Martin Corporation | 3276 |
1 |
| Microsoft Technology Licensing, LLC | 53649 |
1 |
| Air Products and Chemicals, Inc. | 1417 |
1 |
| American Sterilizer Company | 664 |
1 |
| Cameron Solutions, Inc. | 66 |
1 |
| City University of Hong Kong | 838 |
1 |
| Composite Cooling Solutions, L.P. | 16 |
1 |
| Other owners | 13 |