- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 37/12 - Forms of water tubes, e.g. of varying cross-section
Patent holdings for IPC class F22B 37/12
Total number of patents in this class: 35
10-year publication summary
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1
|
3
|
4
|
3
|
1
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3
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0
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0
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0
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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
|
|---|---|---|
| Siemens AG | 24236 |
4 |
| Mitsubishi Power, Ltd. | 1819 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9016 |
2 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
2 |
| GE-Hitachi Nuclear Energy Americas LLC | 443 |
2 |
| Institute of Engineering Thermophysics, Chinese Academy of Sciences | 53 |
2 |
| Alfa Laval Aalborg Header-coil Company A/S | 4 |
2 |
| Burnham Services, Inc. | 42 |
1 |
| Cenovus Energy Inc. | 422 |
1 |
| Doosan Babcock Limited | 30 |
1 |
| Doosan Power Systems Limited | 19 |
1 |
| DRI-STEEM Corporation | 48 |
1 |
| Liebherr-Aerospace Toulouse SAS | 159 |
1 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
1 |
| Nippon Steel Corporation | 6687 |
1 |
| Nuovo Pignone S.p.A. | 89 |
1 |
| Propak Systems Ltd. | 24 |
1 |
| Xi'an Jiaotong University | 703 |
1 |
| Superior Boiler, LLC | 6 |
1 |
| Aalborg CSP A/S | 7 |
1 |
| Other owners | 5 |