- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 40
10-year publication summary
2
|
2
|
3
|
7
|
1
|
1
|
1
|
4
|
4
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
General Electric Company | 18133 |
3 |
LG Chem, Ltd. | 17205 |
3 |
Société des Produits Nestlé S.A. | 9672 |
2 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
2 |
Abaco Systems, Inc . | 34 |
2 |
Adionics | 19 |
2 |
Innovel 2000 Inc. | 2 |
2 |
National University Corporation Tokyo University of Marine Science and Technology | 103 |
2 |
Technion Research and Development Foundation Ltd. | 337 |
2 |
Xenesys Inc. | 7 |
2 |
3m Innovative Properties Company | 18406 |
1 |
Nestec S.A. | 2777 |
1 |
The Regents of the University of California | 18943 |
1 |
Lockheed Martin Corporation | 3406 |
1 |
Microsoft Technology Licensing, LLC | 51439 |
1 |
American Sterilizer Company | 654 |
1 |
Cameron Solutions, Inc. | 67 |
1 |
City University of Hong Kong | 684 |
1 |
Composite Cooling Solutions, L.P. | 17 |
1 |
DyStar Textilfarben GmbH & Co. Deutschland KG | 60 |
1 |
Other owners | 8 |