- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 13/18 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by surface treatment, e.g. polishing
Patent holdings for IPC class F28F 13/18
Total number of patents in this class: 736
10-year publication summary
|
51
|
67
|
81
|
66
|
73
|
80
|
53
|
75
|
48
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daikin Industries, Ltd. | 9495 |
26 |
| Mitsubishi Electric Corporation | 43934 |
25 |
| Wieland-Werke AG | 315 |
17 |
| Denso Corporation | 23338 |
14 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
14 |
| Massachusetts Institute of Technology | 9795 |
12 |
| Carrier Corporation | 4759 |
12 |
| 3m Innovative Properties Company | 18406 |
11 |
| Toyota Motor Corporation | 28582 |
11 |
| FUJIFILM Corporation | 27102 |
11 |
| UACJ Corporation | 631 |
10 |
| The Board of Trustees of the Leland Stanford Junior University | 6054 |
9 |
| Hamilton Sundstrand Corporation | 4525 |
9 |
| Nelumbo Inc. | 40 |
9 |
| Nippon Paint Surf Chemicals Co., Ltd. | 82 |
9 |
| The Regents of the University of Colorado, a body corporate | 2430 |
9 |
| General Electric Company | 18133 |
7 |
| Trane International Inc. | 1123 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
6 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
6 |
| Other owners | 502 |