- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28G - Cleaning of internal or external surfaces of heat-exchange or heat-transfer conduits, e.g. water tubes of boilers
- F28G 9/00 - Cleaning by flushing or washing, e.g. with chemical solvents
Patent holdings for IPC class F28G 9/00
Total number of patents in this class: 376
10-year publication summary
|
35
|
34
|
26
|
33
|
37
|
29
|
33
|
20
|
15
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qingdao Haier Air Conditioner General Corp.,ltd | 2433 |
14 |
| Haier Smart Home Co., Ltd. | 5728 |
13 |
| Mitsubishi Electric Corporation | 48172 |
9 |
| Ecolab USA Inc. | 5813 |
9 |
| Fractal Heatsink Technologies, LLC | 21 |
9 |
| Crossford International, LLC | 92 |
8 |
| Blue Box Air LLC | 13 |
8 |
| Stoneage, Inc. | 285 |
7 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
6 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1926 |
6 |
| Mitsubishi Power, Ltd. | 1833 |
6 |
| Dominion Engineering, Inc. | 31 |
5 |
| Kurita Water Industries Ltd. | 1290 |
5 |
| Carolina Filters, Inc. | 11 |
5 |
| The Chugoku Electric Power Co., Inc. | 511 |
4 |
| Hiroshima University | 588 |
4 |
| T5 Technologies, Inc. | 4 |
4 |
| Westinghouse Electric Company LLC | 1194 |
4 |
| Toyo Koatsu Co., Ltd. | 25 |
4 |
| Angara Global Limited | 5 |
4 |
| Other owners | 242 |