- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 37/38 - Determining or indicating operating conditions in steam boilers, e.g. monitoring direction or rate of water flow through water tubes
Patent holdings for IPC class F22B 37/38
Total number of patents in this class: 162
10-year publication summary
|
12
|
10
|
5
|
12
|
13
|
14
|
19
|
13
|
6
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8735 |
12 |
| Miura Co., Ltd. | 286 |
8 |
| Mitsubishi Power, Ltd. | 1764 |
8 |
| IHI Corporation | 3440 |
7 |
| Ice Thermal Harvesting, LLC | 76 |
7 |
| AYR Ltd. | 103 |
5 |
| The Chugoku Electric Power Co., Inc. | 513 |
4 |
| IHI Inspection and Instrumentation Co., Ltd. | 27 |
4 |
| International Paper Company | 785 |
4 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
4 |
| Shoplogix (US) Inc. | 9 |
4 |
| Siemens AG | 24461 |
3 |
| Azbil Corporation | 467 |
3 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
3 |
| Ecolab USA Inc. | 5499 |
3 |
| Spirax-Sarco Limited | 109 |
3 |
| Sumitomo Heavy Industries, Ltd. | 1929 |
3 |
| GE Infrastructure Technology, LLC | 6228 |
3 |
| BL Technologies, Inc. | 832 |
2 |
| Electric Power Research Institute, Inc. | 213 |
2 |
| Other owners | 70 |