- 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 1/18 - Feed-water heaters, e.g. preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly
Patent holdings for IPC class F22D 1/18
Total number of patents in this class: 27
10-year publication summary
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2
|
0
|
1
|
3
|
2
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0
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4
|
3
|
2
|
3
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kalindha Rashmi LLC | 7 |
4 |
| Andritz Oy | 295 |
3 |
| Carbonquest, Inc. | 45 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9139 |
2 |
| Xi'an Jiaotong University | 736 |
2 |
| Hitachi, Ltd. | 16113 |
1 |
| Alstom Technology Ltd | 1040 |
1 |
| Babcock-Hitachi Kabushiki Kaisha | 93 |
1 |
| Doosan Power Systems Limited | 19 |
1 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1544 |
1 |
| IHI Corporation | 3535 |
1 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
1 |
| MODEC International Inc. | 5 |
1 |
| Ube Industries, Ltd. | 770 |
1 |
| The University Court of the University of Glasgow | 270 |
1 |
| Exa Energy Technology (Shenzhen) Co., Ltd. | 26 |
1 |
| Beijing Tiandi Rongchuang Technology Co., Ltd | 4 |
1 |
| Huaneng YiMin Coal Electricity Co., Ltd | 60 |
1 |
| Other owners | 0 |