- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 9/14 - Multistep treatment of water, waste water or sewage at least one step being a biological treatment
Patent holdings for IPC class C02F 9/14
Total number of patents in this class: 367
10-year publication summary
|
9
|
14
|
24
|
18
|
32
|
40
|
39
|
47
|
19
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boying Xiamen Science and Technology Co., Ltd. | 31 |
11 |
| Chinese Research Academy of Environmental Sciences | 113 |
11 |
| Nanjing University | 646 |
8 |
| Nanyang Technological University | 1739 |
5 |
| South China University of Technology | 1581 |
5 |
| Jiangsu Aoyang Ecological Landscape Co., Ltd | 6 |
5 |
| Shandong University | 886 |
4 |
| Tongji University | 440 |
4 |
| General Electric Company | 18133 |
3 |
| Anaergia Inc. | 111 |
3 |
| Kurita Water Industries Ltd. | 1110 |
3 |
| Organo Corporation | 394 |
3 |
| Sichuan University | 498 |
3 |
| Shanghai Fanqing Environmental Engineering Co. Ltd. | 8 |
3 |
| Beijing Drainage Group Co., Ltd | 15 |
3 |
| Hunan Hengkai Environmental Protection Investment Company Limited | 6 |
3 |
| Access Business Group International LLC | 367 |
2 |
| Alcoa Inc. | 323 |
2 |
| The Chugoku Electric Power Co., Inc. | 498 |
2 |
| Evoqua Water Technologies LLC | 904 |
2 |
| Other owners | 282 |