- 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 5/28 - Automatic feed-control systems responsive to amount of steam withdrawnAutomatic feed-control systems responsive to steam pressure
Patent holdings for IPC class F22D 5/28
Total number of patents in this class: 12
10-year publication summary
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1
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1
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1
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0
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0
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0
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0
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 6214 |
3 |
| Skavis Corporation | 12 |
2 |
| Cosmo Oil Co., Ltd. | 179 |
1 |
| Inpex Corporation | 141 |
1 |
| Japan Oil, Gas and Metals National Corporation | 186 |
1 |
| Japan Petroleum Exploration Co., Ltd. | 139 |
1 |
| JX Nippon Oil & Energy Corporation | 978 |
1 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 169 |
1 |
| National Technology & Engineering Solutions of Sandia, LLC | 1927 |
1 |
| Other owners | 0 |