- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 3/04 - Other methods of steam generationSteam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure-reducing chambers, e.g. in accumulators
Patent holdings for IPC class F22B 3/04
Total number of patents in this class: 56
10-year publication summary
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4
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1
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4
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2
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2
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3
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4
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4
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6
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5
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8787 |
4 |
| Fulton Group N.A., Inc. | 50 |
3 |
| TLV Co., Ltd. | 332 |
3 |
| Skyven Technologies | 4 |
3 |
| Brais Malouin and Associates Inc. | 2 |
2 |
| Guangdong University of Technology | 589 |
2 |
| Ingenica Ingenierie Industrielle | 2 |
2 |
| Siemens AG | 24386 |
1 |
| The Regents of the University of California | 20087 |
1 |
| Hitachi, Ltd. | 15572 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10946 |
1 |
| Dow Corning Corporation | 959 |
1 |
| Ansaldo Energia S.p.A. | 130 |
1 |
| Ausra, Inc. | 11 |
1 |
| Daicel Corporation | 2376 |
1 |
| Dalian University of Technology | 1526 |
1 |
| Efficient Energy GmbH | 59 |
1 |
| Enero Inventions | 5 |
1 |
| Enviro Power LLC | 2 |
1 |
| Japan Chemical Engineering & Machinery Co., Ltd. | 2 |
1 |
| Other owners | 24 |