- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/32 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Patent holdings for IPC class F28F 1/32
Total number of patents in this class: 1096
10-year publication summary
|
79
|
99
|
101
|
100
|
95
|
65
|
70
|
64
|
56
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 44851 |
200 |
| Daikin Industries, Ltd. | 9838 |
126 |
| LG Electronics Inc. | 71039 |
39 |
| Denso Corporation | 23769 |
29 |
| UACJ Corporation | 666 |
25 |
| Panasonic Corporation | 20315 |
24 |
| Samsung Electronics Co., Ltd. | 139001 |
23 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
21 |
| Carrier Corporation | 4451 |
20 |
| Valeo Systemes Thermiques | 2600 |
20 |
| Kyungdong Navien Co., Ltd. | 594 |
17 |
| Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 128 |
14 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 494 |
13 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
12 |
| Kyoshin Kogyo Co., Ltd. | 26 |
11 |
| Trane International Inc. | 1153 |
11 |
| The University of Tokyo | 4060 |
11 |
| Asia Vital Components Co., Ltd. | 402 |
10 |
| Hidaka Seiki Kabushiki Kaisha | 61 |
10 |
| Rheem Manufacturing Company | 922 |
10 |
| Other owners | 450 |