- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/18 - 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 the means being integral with the element, e.g. formed by extrusion the element being built-up from finned sections
Patent holdings for IPC class F28F 1/18
Total number of patents in this class: 28
10-year publication summary
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3
|
1
|
3
|
3
|
4
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2
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0
|
1
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1
|
1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wieland-Werke AG | 351 |
6 |
| Mitsubishi Electric Corporation | 47556 |
2 |
| General Electric Company | 13819 |
1 |
| LG Electronics Inc. | 74953 |
1 |
| ExxonMobil Research And Engineering Company | 2469 |
1 |
| Aisin Seiki Kabushiki Kaisha | 2179 |
1 |
| JVC Kenwood Corporation | 3108 |
1 |
| ABB Schweiz AG | 7429 |
1 |
| Alcoa Inc. | 266 |
1 |
| Brazeway, Inc. | 26 |
1 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2001 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3276 |
1 |
| Kandori Industry Ltd. | 4 |
1 |
| Lumitar Array Lighting Technology Finland Ltd | 1 |
1 |
| Tiax LLC | 60 |
1 |
| The University of Tokyo | 4320 |
1 |
| Waki Factory Inc. | 9 |
1 |
| Haier Smart Home Co., Ltd. | 5645 |
1 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1915 |
1 |
| Wuhu Maty Air-Conditioning Equipment Co., Ltd. | 80 |
1 |
| Other owners | 2 |