- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 37/56 - Boiler-cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
Patent holdings for IPC class F22B 37/56
Total number of patents in this class: 72
10-year publication summary
|
7
|
7
|
5
|
3
|
3
|
5
|
12
|
6
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1110 |
9 |
| International Paper Company | 857 |
8 |
| Andritz Oy | 276 |
6 |
| Miura Co., Ltd. | 287 |
6 |
| XDI Holdings, LLC | 68 |
5 |
| Mitsubishi Power, Ltd. | 1680 |
4 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
3 |
| Siemens AG | 24990 |
2 |
| Fuji Electric Co., Ltd. | 4750 |
2 |
| Clyde Bergemann, Inc. | 10 |
2 |
| Korea Institute of Industrial Technology | 994 |
2 |
| Framatome GmbH | 246 |
2 |
| CheMin GmbH | 15 |
2 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
2 |
| Massachusetts Institute of Technology | 9795 |
1 |
| Boyle Energy Services & Technology, Inc. | 4 |
1 |
| Clyde Bergemann GmbH | 8 |
1 |
| Clyde Bergemann GmbH Maschinen-Und Apparatebau | 10 |
1 |
| Ecolab USA Inc. | 5190 |
1 |
| Integrated Test & Measurement (ITM), LLC | 8 |
1 |
| Other owners | 11 |