- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F22B - Methods of steam generation; steam boilers
- F22B 37/04 - Component parts or details of steam boilers applicable to more than one kind or type of steam boiler and characterised by material, e.g. use of special steel alloy
Patent holdings for IPC class F22B 37/04
Total number of patents in this class: 39
10-year publication summary
|
1
|
7
|
5
|
1
|
2
|
3
|
1
|
2
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
4 |
| Saudi Arabian Oil Company | 11322 |
3 |
| Hitachi Metals, Ltd. | 2175 |
2 |
| Koninklijke Philips Electronics N.V. | 13133 |
2 |
| Alstom Technology Ltd | 1196 |
2 |
| Dai-Ichi High Frequency Co., Ltd. | 34 |
2 |
| Hitachi Power Europe GmbH | 15 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
2 |
| SunCoke Technology and Development LLC | 191 |
2 |
| Toshiba Corporation | 12017 |
1 |
| ExxonMobil Chemical Patents Inc. | 4286 |
1 |
| Air Products and Chemicals, Inc. | 1448 |
1 |
| Aramco Services Company | 3504 |
1 |
| Babcock-Hitachi Kabushiki Kaisha | 107 |
1 |
| Electricite de France | 695 |
1 |
| Flourshing Enterprise Co., Ltd. | 1 |
1 |
| General Electric Technology GmbH | 1657 |
1 |
| Nippon Steel Corporation | 5649 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
1 |
| Sumitomo Metal Industries, Ltd. | 453 |
1 |
| Other owners | 7 |