- 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: 1062
10-year publication summary
|
75
|
79
|
99
|
101
|
100
|
95
|
64
|
70
|
62
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
196 |
| Daikin Industries, Ltd. | 9495 |
133 |
| LG Electronics Inc. | 69257 |
34 |
| Denso Corporation | 23338 |
29 |
| Panasonic Corporation | 20786 |
24 |
| UACJ Corporation | 631 |
23 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
21 |
| Valeo Systemes Thermiques | 2471 |
20 |
| Samsung Electronics Co., Ltd. | 131630 |
19 |
| Carrier Corporation | 4759 |
18 |
| Kyungdong Navien Co., Ltd. | 566 |
17 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
13 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
12 |
| Kyoshin Kogyo Co., Ltd. | 26 |
11 |
| Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 110 |
11 |
| Trane International Inc. | 1123 |
11 |
| Hidaka Seiki Kabushiki Kaisha | 61 |
10 |
| Rheem Manufacturing Company | 861 |
10 |
| Asia Vital Components Co., Ltd. | 413 |
9 |
| Toshiba Carrier Corporation | 567 |
9 |
| Other owners | 432 |