- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22D - Preheating, or accumulating preheated, feed-water for steam generationfeed-water supply for steam generationcontrolling water level for steam generationauxiliary devices for promoting water circulation within steam boilers
- F22D 1/28 - Feed-water heaters, e.g. preheaters for direct heat transfer, e.g. by mixing water and steam
Patent holdings for IPC class F22D 1/28
Total number of patents in this class: 24
10-year publication summary
|
2
|
2
|
0
|
2
|
0
|
1
|
2
|
3
|
0
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Miura Co., Ltd. | 284 |
3 |
| Fort Hills Energy L.P. | 87 |
2 |
| General Electric Technology GmbH | 1322 |
2 |
| Mitsubishi Power, Ltd. | 1837 |
2 |
| Graphite Energy (Assets) Pty Limited | 16 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9188 |
1 |
| GM Global Technology Operations LLC | 16219 |
1 |
| Uop LLC | 4407 |
1 |
| Advanced Steam Technology | 3 |
1 |
| GREE Electric Appliances, Inc. of Zhuhai | 3320 |
1 |
| Hrst, Inc. | 18 |
1 |
| Mitsubishi Hitachi Power Systems Europe GmbH | 39 |
1 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
1 |
| Thermax Limited | 44 |
1 |
| Victor Tokuhan Co., Ltd. | 3 |
1 |
| Mosi Chu Irrevocable Trust | 2 |
1 |
| Nooter/eriksen, Inc. | 69 |
1 |
| GE Vernova Infrastructure Technology LLC | 543 |
1 |
| Other owners | 0 |