- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 9/04 - Multistep treatment of water, waste water or sewage at least one step being a chemical treatment
Patent holdings for IPC class C02F 9/04
Total number of patents in this class: 335
10-year publication summary
|
12
|
24
|
24
|
39
|
29
|
29
|
47
|
29
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Organo Corporation | 476 |
12 |
| Kurita Water Industries Ltd. | 1198 |
11 |
| Nomura Micro Science Co., Ltd. | 80 |
7 |
| Brisben Water Solutions LLC | 20 |
4 |
| Sinyu Technology (Fujian) Co., Ltd. | 53 |
4 |
| Toshiba Infrastructure Systems & Solutions Corporation | 1004 |
4 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6271 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 31696 |
3 |
| Nanjing University | 735 |
3 |
| Datang Environment Industry Group Co., Ltd. | 11 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8777 |
2 |
| Monsanto Technology LLC | 8303 |
2 |
| Asahi Kasei Kabushiki Kaisha | 2681 |
2 |
| Bionest Technologies Inc. | 29 |
2 |
| Brimtech, LLC | 4 |
2 |
| Chinese Research Academy of Environmental Sciences | 128 |
2 |
| East China University of Science and Technology | 517 |
2 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1244 |
2 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1213 |
2 |
| Ovivo Inc. | 162 |
2 |
| Other owners | 260 |