- 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 11/00 - Feed-water supply not provided for in other main groups
Patent holdings for IPC class F22D 11/00
Total number of patents in this class: 82
10-year publication summary
|
3
|
11
|
10
|
6
|
5
|
5
|
2
|
5
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1194 |
9 |
| Siemens AG | 24477 |
5 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
5 |
| Miura Co., Ltd. | 286 |
5 |
| TLV Co., Ltd. | 330 |
5 |
| Mitsubishi Power, Ltd. | 1762 |
5 |
| Siemens Energy Global GmbH & Co. KG | 2969 |
5 |
| Nalco Company | 562 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8725 |
3 |
| Total SA | 493 |
3 |
| Donaldson Company, Inc. | 1599 |
2 |
| Fccl Partnership | 38 |
2 |
| IHI Corporation | 3438 |
2 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6273 |
2 |
| Heat IP Holdco, LLC | 49 |
2 |
| Toshiba Corporation | 12345 |
1 |
| Robert Bosch GmbH | 42684 |
1 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4941 |
1 |
| 1nSite Technologies Ltd. | 4 |
1 |
| The Babcock & Wilcox Company | 149 |
1 |
| Other owners | 18 |