- 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 1/32 - Feed-water heaters, e.g. preheaters arranged to be heated by steam, e.g. bled from turbines
Patent holdings for IPC class F22D 1/32
Total number of patents in this class: 68
10-year publication summary
|
7
|
8
|
4
|
8
|
7
|
2
|
2
|
8
|
1
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24606 |
5 |
| Toshiba Corporation | 12136 |
3 |
| General Electric Technology GmbH | 1603 |
3 |
| Mitsubishi Hitachi Power Systems, Ltd. | 995 |
3 |
| Mitsubishi Power, Ltd. | 1749 |
3 |
| Hitachi, Ltd. | 15291 |
2 |
| Massachusetts Institute of Technology | 9956 |
2 |
| Electric Power Development Co., Ltd. | 74 |
2 |
| Toshiba Energy Systems & Solutions Corp. | 1044 |
2 |
| Daniel Steam, Inc. | 2 |
2 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 306 |
2 |
| Nooter/eriksen, Inc. | 64 |
2 |
| Echogen Power Systems (delawre), Inc. | 9 |
2 |
| Pintail Power LLC | 21 |
2 |
| General Electric Company | 17222 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 30119 |
1 |
| Alstom Technology Ltd | 1136 |
1 |
| Uop LLC | 4204 |
1 |
| Air Products and Chemicals, Inc. | 1457 |
1 |
| Cummins Inc. | 2491 |
1 |
| Other owners | 27 |