- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/14 - 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 longitudinally
Patent holdings for IPC class F28F 1/14
Total number of patents in this class: 133
10-year publication summary
14
|
9
|
14
|
13
|
19
|
16
|
8
|
6
|
6
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
9 |
0908905 B.C. Ltd. | 7 |
7 |
New Power Concepts LLC | 29 |
6 |
Uop LLC | 4083 |
5 |
NOVA Chemicals (International) S.A. | 717 |
4 |
The University of Tokyo | 3903 |
3 |
Wieland-Werke AG | 315 |
3 |
Danfoss A/S | 1259 |
3 |
Marvell Asia PTE, Ltd. | 6841 |
3 |
Siemens AG | 24990 |
2 |
Denso Corporation | 23338 |
2 |
Rolls-Royce PLC | 2944 |
2 |
Ensyn Renewables, Inc. | 74 |
2 |
Linde Aktiengesellschaft | 1600 |
2 |
MAHLE International GmbH | 2670 |
2 |
Modine Manufacturing Company | 305 |
2 |
Rinnai Corporation | 204 |
2 |
Zhejiang DunAn Artificial Environment Co., Ltd | 394 |
2 |
Allfest GmbH | 2 |
2 |
Société des Produits Nestlé S.A. | 9672 |
1 |
Other owners | 69 |