- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 138
10-year publication summary
|
14
|
13
|
19
|
16
|
8
|
6
|
6
|
6
|
5
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48048 |
10 |
| Affinity Graphite Ltd. | 7 |
7 |
| New Power Concepts LLC | 26 |
6 |
| Uop LLC | 4393 |
5 |
| NOVA Chemicals (International) S.A. | 799 |
4 |
| The University of Tokyo | 4369 |
3 |
| Wieland-Werke AG | 357 |
3 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 709 |
3 |
| Danfoss A/S | 1436 |
3 |
| Marvell Asia PTE, Ltd. | 6309 |
3 |
| Siemens AG | 24020 |
2 |
| Denso Corporation | 25579 |
2 |
| Ensyn Renewables, Inc. | 74 |
2 |
| Linde Aktiengesellschaft | 1421 |
2 |
| MAHLE International GmbH | 2917 |
2 |
| Rinnai Corporation | 284 |
2 |
| Allfest GmbH | 3 |
2 |
| Chastnoe Uchrezhdenie Ро Obespecheniyu Nauchnogo Razvitiya Atomnoj Otrasli "nauka I Innovacii" | 6 |
2 |
| Joint-Stock Company "mechanical Engineering Plant "zio-podolsk" | 9 |
2 |
| Société des Produits Nestlé S.A. | 10107 |
1 |
| Other owners | 72 |