- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 349
10-year publication summary
|
26
|
32
|
35
|
34
|
26
|
33
|
37
|
29
|
31
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
13 |
| Haier Smart Home Co., Ltd. | 4882 |
12 |
| Mitsubishi Electric Corporation | 43934 |
9 |
| Crossford International, LLC | 87 |
8 |
| Ecolab USA Inc. | 5190 |
8 |
| Blue Box Air LLC | 13 |
8 |
| Fractal Heatsink Technologies, LLC | 18 |
7 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
| Dominion Engineering, Inc. | 33 |
5 |
| Stoneage, Inc. | 224 |
5 |
| T5 Technologies, Inc. | 5 |
5 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
5 |
| Mitsubishi Power, Ltd. | 1680 |
5 |
| The Chugoku Electric Power Co., Inc. | 498 |
4 |
| Coil Flow Max Inc. | 5 |
4 |
| Hiroshima University | 527 |
4 |
| Kurita Water Industries Ltd. | 1110 |
4 |
| Westinghouse Electric Company LLC | 1087 |
4 |
| Toyo Koatsu Co., Ltd. | 25 |
4 |
| Siemens AG | 24990 |
3 |
| Other owners | 227 |