- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 31/04 - Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
Patent holdings for IPC class F22B 31/04
Total number of patents in this class: 32
10-year publication summary
|
4
|
2
|
3
|
3
|
5
|
4
|
1
|
1
|
0
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valmet Technologies Oy | 284 |
4 |
| Siemens AG | 24990 |
3 |
| Stork Thermeq B.V. | 8 |
3 |
| Washington University | 1473 |
3 |
| Andritz Oy | 276 |
2 |
| Saudi Arabian Oil Company | 11322 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Aramco Services Company | 3504 |
1 |
| Ecoenergy Gesellschaft fur Energie-und Umwelttechnik mbH | 6 |
1 |
| Fives North American Combustion, Inc. | 45 |
1 |
| Guangdong University of Technology | 466 |
1 |
| INEOS USA LLC | 64 |
1 |
| PCL Industrial Services, Inc. | 2 |
1 |
| Renmatix, Inc. | 132 |
1 |
| Sener, Ingenieria y Sistemas, S.A. | 45 |
1 |
| Vysoka Skola Banska - Technicka Univerzita Ostrava | 35 |
1 |
| Babcock & Wilcox Vølund ApS | 15 |
1 |
| Stephen William John Grant | 1 |
1 |
| Zhejiang Liju Boiler Co., Ltd. | 2 |
1 |
| CNIM Groupe | 16 |
1 |
| Other owners | 1 |