- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 13/04 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
Patent holdings for IPC class F28F 13/04
Total number of patents in this class: 60
10-year publication summary
|
6
|
1
|
7
|
8
|
6
|
3
|
2
|
6
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nelumbo Inc. | 50 |
7 |
| The Regents of the University of California | 20506 |
3 |
| Massachusetts Institute of Technology | 10196 |
3 |
| Alfa Laval Corporate AB | 1328 |
3 |
| Daikin Industries, Ltd. | 10375 |
2 |
| Hamilton Sundstrand Corporation | 5014 |
2 |
| Carrier Corporation | 3968 |
2 |
| The Board of Trustees of the University of Illinois | 2739 |
2 |
| Mayekawa Mfg. Co., Ltd. | 346 |
2 |
| North China Electric Power University | 180 |
2 |
| Siemens AG | 24236 |
1 |
| LG Electronics Inc. | 74953 |
1 |
| Toyota Motor Corporation | 34545 |
1 |
| Panasonic Corporation | 19680 |
1 |
| Hitachi, Ltd. | 15881 |
1 |
| Mitsubishi Electric Corporation | 47556 |
1 |
| Showa Denko K.K. | 2103 |
1 |
| Henkel AG & Co. KGaA | 10712 |
1 |
| The United States of America as represented by the Secretary of the Army | 1242 |
1 |
| ABB Schweiz AG | 7429 |
1 |
| Other owners | 22 |