- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 21/34 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
Patent holdings for IPC class F22B 21/34
Total number of patents in this class: 34
10-year publication summary
|
7
|
5
|
6
|
3
|
2
|
1
|
0
|
1
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
4 |
| Andritz Oy | 276 |
2 |
| The Babcock & Wilcox Company | 184 |
2 |
| Rheem Manufacturing Company | 861 |
2 |
| Simoneau P.I. Inc. | 14 |
2 |
| Mitsubishi Power, Ltd. | 1680 |
2 |
| Sullivan, Higgins, and Brion PPE LLC | 8 |
2 |
| A. o. Smith Corporation | 204 |
1 |
| Andritz Technology and Asset Management GmbH | 89 |
1 |
| Doosan Power Systems Limited | 19 |
1 |
| Fives North American Combustion, Inc. | 45 |
1 |
| Hitachi Zosen iNova AG | 106 |
1 |
| International Paper Company | 857 |
1 |
| Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. | 122 |
1 |
| Rinnai Corporation | 204 |
1 |
| Valmet Technologies Oy | 284 |
1 |
| XDI Holdings, LLC | 68 |
1 |
| Superior Boiler, LLC | 5 |
1 |
| Sullivan, Higgins & Brion PPE LLC | 1 |
1 |
| Other owners | 0 |