- 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: 48
10-year publication summary
|
3
|
7
|
1
|
1
|
1
|
3
|
4
|
2
|
5
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 13831 |
3 |
| LG Chem, Ltd. | 17822 |
3 |
| Société des Produits Nestlé S.A. | 9955 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 47319 |
2 |
| Abaco Systems, Inc . | 31 |
2 |
| Adionics | 26 |
2 |
| Innovel 2000 Inc. | 2 |
2 |
| National University Corporation Tokyo University of Marine Science and Technology | 105 |
2 |
| Technion Research and Development Foundation Ltd. | 327 |
2 |
| Xenesys Inc. | 6 |
2 |
| 3m Innovative Properties Company | 17512 |
1 |
| Nestec S.A. | 2589 |
1 |
| The Regents of the University of California | 20534 |
1 |
| Lockheed Martin Corporation | 3279 |
1 |
| Microsoft Technology Licensing, LLC | 54242 |
1 |
| Air Products and Chemicals, Inc. | 1464 |
1 |
| Alite GmbH | 19 |
1 |
| American Sterilizer Company | 674 |
1 |
| BOMAG GmbH | 397 |
1 |
| Cameron Solutions, Inc. | 66 |
1 |
| Other owners | 16 |