- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 1/28 - Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like traversed by the working-fluid substantially radially
Patent holdings for IPC class F01D 1/28
Total number of patents in this class: 9
10-year publication summary
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1
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1
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2
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1
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1
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0
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0
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0
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0
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Equitherm S.A R.L. | 3 |
2 |
| Exergy S.p.A. | 25 |
1 |
| International Engine Intellectual Property Company, LLC | 543 |
1 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
1 |
| EXERGY INTERNATIONAL S.r.l. | 20 |
1 |
| Rtx Corporation | 8674 |
1 |
| Other owners | 0 |