- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 21/12 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially-straight water tubes involving two or more upper drums and two or more lower drums, e.g. with crosswise-arranged water-tube sets in abutting connection with drums
Patent holdings for IPC class F22B 21/12
Total number of patents in this class: 3
10-year publication summary
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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0
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0
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1
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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
|
---|---|---|
Rolls-Royce PLC | 2944 |
1 |
NEM Energy B.V. | 17 |
1 |
Rolls-Royce Power Engineering plc | 24 |
1 |
Other owners | 0 |