- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/30 - 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 being attachable to the element
Patent holdings for IPC class F28F 1/30
Total number of patents in this class: 288
10-year publication summary
22
|
18
|
24
|
34
|
19
|
21
|
22
|
19
|
22
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
50 |
Denso Corporation | 23338 |
30 |
Daikin Industries, Ltd. | 9495 |
12 |
LG Electronics Inc. | 69257 |
9 |
Sharp Kabushiki Kaisha | 18957 |
9 |
T.RAD Co., Ltd. | 101 |
8 |
Showa Denko K.K. | 2539 |
6 |
Calsonic Kansei Corporation | 686 |
6 |
Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 110 |
5 |
Samsung Electronics Co., Ltd. | 131630 |
4 |
Evapco, Inc. | 244 |
4 |
Hidaka Seiki Kabushiki Kaisha | 61 |
4 |
Sanden Holdings Corporation | 216 |
4 |
UACJ Corporation | 631 |
4 |
Panasonic Corporation | 20786 |
3 |
Carrier Corporation | 4759 |
3 |
Casale SA | 572 |
3 |
Mitsubishi Aluminum Co., Ltd. | 58 |
3 |
Nippon Light Metal Company, Ltd. | 645 |
3 |
Rheem Manufacturing Company | 861 |
3 |
Other owners | 115 |