- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam 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: 147
10-year publication summary
|
10
|
12
|
10
|
5
|
12
|
13
|
14
|
19
|
11
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8217 |
9 |
| Miura Co., Ltd. | 287 |
8 |
| IHI Corporation | 3268 |
7 |
| Mitsubishi Power, Ltd. | 1680 |
7 |
| Ice Thermal Harvesting, LLC | 68 |
7 |
| AYR Ltd. | 96 |
5 |
| The Chugoku Electric Power Co., Inc. | 498 |
4 |
| IHI Inspection and Instrumentation Co., Ltd. | 27 |
4 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
4 |
| Siemens AG | 24990 |
3 |
| Azbil Corporation | 486 |
3 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| International Paper Company | 857 |
3 |
| Spirax-Sarco Limited | 110 |
3 |
| GE Infrastructure Technology, LLC | 5873 |
3 |
| Everactive, Inc. | 35 |
3 |
| BL Technologies, Inc. | 831 |
2 |
| Electric Power Research Institute, Inc. | 223 |
2 |
| Electricite de France | 695 |
2 |
| Other owners | 62 |