- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/34 - 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 obliquely
Patent holdings for IPC class F28F 1/34
Total number of patents in this class: 82
10-year publication summary
|
7
|
6
|
12
|
7
|
4
|
4
|
7
|
3
|
6
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48097 |
4 |
| The University of Tokyo | 4372 |
4 |
| Denso Corporation | 25607 |
3 |
| Oy Halton Group Ltd. | 117 |
3 |
| Safran Aero Boosters SA | 185 |
3 |
| Unison Industries, LLC | 216 |
3 |
| Valmet AB | 555 |
3 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 710 |
3 |
| Danfoss A/S | 1438 |
3 |
| Atago Manufacturing Co.,Ltd. | 4 |
3 |
| General Electric Company | 13908 |
2 |
| Honeywell International Inc. | 12773 |
2 |
| Daikin Industries, Ltd. | 10511 |
2 |
| Sumitomo Precision Products Co., Ltd. | 327 |
2 |
| Wieland-Werke AG | 358 |
2 |
| Blue Frontier, Inc. | 42 |
2 |
| Samsung Electronics Co., Ltd. | 158156 |
1 |
| LG Electronics Inc. | 75845 |
1 |
| The Boeing Company | 20168 |
1 |
| Airbus Operations GmbH | 3449 |
1 |
| Other owners | 34 |