- 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: 67
10-year publication summary
|
1
|
4
|
3
|
2
|
3
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5
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4
|
6
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10
|
5
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 9252 |
7 |
| BASF SE | 21334 |
5 |
| Fulton Group N.A., Inc. | 55 |
3 |
| TLV Co., Ltd. | 339 |
3 |
| Skyven Technologies | 8 |
3 |
| Brais Malouin and Associates Inc. | 2 |
2 |
| Guangdong University of Technology | 672 |
2 |
| Ingenica Ingenierie Industrielle | 2 |
2 |
| Siemens AG | 23934 |
1 |
| The Regents of the University of California | 20960 |
1 |
| Hitachi, Ltd. | 16221 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11137 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5299 |
1 |
| Dow Corning Corporation | 867 |
1 |
| Ansaldo Energia S.p.A. | 114 |
1 |
| Ausra, Inc. | 11 |
1 |
| Daicel Corporation | 2591 |
1 |
| Dalian University of Technology | 1611 |
1 |
| Efficient Energy GmbH | 58 |
1 |
| Enero Inventions | 4 |
1 |
| Other owners | 28 |