- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 327
10-year publication summary
|
24
|
34
|
20
|
21
|
22
|
19
|
22
|
23
|
24
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48048 |
65 |
| Denso Corporation | 25579 |
33 |
| Daikin Industries, Ltd. | 10504 |
14 |
| LG Electronics Inc. | 75818 |
11 |
| T.RAD Co., Ltd. | 105 |
9 |
| Sharp Kabushiki Kaisha | 18523 |
9 |
| Samsung Electronics Co., Ltd. | 157946 |
7 |
| Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 156 |
6 |
| Carrier Corporation | 3951 |
4 |
| Calsonic Kansei Corporation | 521 |
4 |
| Evapco, Inc. | 311 |
4 |
| Hidaka Seiki Kabushiki Kaisha | 58 |
4 |
| Sanden Holdings Corporation | 208 |
4 |
| UACJ Corporation | 740 |
4 |
| The University of Tokyo | 4369 |
4 |
| Panasonic Corporation | 18962 |
3 |
| Komatsu Ltd. | 4733 |
3 |
| Mitsubishi Aluminum Co., Ltd. | 56 |
3 |
| Nippon Light Metal Company, Ltd. | 683 |
3 |
| Rheem Manufacturing Company | 1020 |
3 |
| Other owners | 130 |