- 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: 61
10-year publication summary
|
6
|
2
|
7
|
8
|
7
|
3
|
2
|
6
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nelumbo Inc. | 51 |
7 |
| The Regents of the University of California | 20694 |
3 |
| Massachusetts Institute of Technology | 10237 |
3 |
| Alfa Laval Corporate AB | 1336 |
3 |
| Daikin Industries, Ltd. | 10472 |
2 |
| Hamilton Sundstrand Corporation | 5017 |
2 |
| Carrier Corporation | 3960 |
2 |
| The Board of Trustees of the University of Illinois | 2748 |
2 |
| Mayekawa Mfg. Co., Ltd. | 366 |
2 |
| Mitsubishi Heavy Industries Compressor Corporation | 639 |
2 |
| North China Electric Power University | 186 |
2 |
| Siemens AG | 24050 |
1 |
| LG Electronics Inc. | 75591 |
1 |
| Toyota Motor Corporation | 35578 |
1 |
| Panasonic Corporation | 19103 |
1 |
| Hitachi, Ltd. | 16047 |
1 |
| Mitsubishi Electric Corporation | 47943 |
1 |
| Showa Denko K.K. | 2075 |
1 |
| Henkel AG & Co. KGaA | 10766 |
1 |
| The United States of America as represented by the Secretary of the Army | 1253 |
1 |
| Other owners | 22 |