- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 21/04 - 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 a single upper drum and a single lower drum, e.g. the drums being arranged transversely
Patent holdings for IPC class F22B 21/04
Total number of patents in this class: 20
10-year publication summary
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0
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3
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1
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1
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1
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0
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0
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1
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Miura Co., Ltd. | 285 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 9204 |
2 |
| Alstom Technology Ltd | 1033 |
1 |
| ERK Eckrohrkessel GmbH | 9 |
1 |
| ES Co., Ltd. | 3 |
1 |
| General Electric Technology GmbH | 1322 |
1 |
| KEPCO Engineering & Construction Company, Inc. | 80 |
1 |
| Korea Institute of Energy Research | 902 |
1 |
| Unilux Advanced Manufacturing, LLC | 9 |
1 |
| Voith Patent GmbH | 2740 |
1 |
| Simoneau P.I. Inc. | 14 |
1 |
| Superior Boiler, LLC | 6 |
1 |
| Shimose Microbes Laboratory Corporation | 39 |
1 |
| Zhejiang Unipower Boiler Co., Ltd | 2 |
1 |
| Zhejiang Liju Thermal Equipment Co., Ltd. | 1 |
1 |
| Other owners | 0 |