- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 21/18 - 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 a single lower drum
Patent holdings for IPC class F22B 21/18
Total number of patents in this class: 4
10-year publication summary
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0
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2
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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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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
|
|---|---|---|
| Nooter/eriksen, Inc. | 61 |
3 |
| Cockerill Maintenance & Ingenierie SA | 82 |
1 |
| Other owners | 0 |