- All sections
- C - Chemistrymetallurgy
- 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: 355
10-year publication summary
|
22
|
18
|
32
|
40
|
39
|
47
|
19
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
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 | 134 |
11 |
| Nanjing University | 804 |
8 |
| Nanyang Technological University | 2223 |
5 |
| South China University of Technology | 1915 |
5 |
| Jiangsu Aoyang Ecological Landscape Co., Ltd | 6 |
5 |
| Shandong University | 1158 |
4 |
| Tongji University | 621 |
4 |
| General Electric Company | 13915 |
3 |
| Anaergia Inc. | 106 |
3 |
| Kurita Water Industries Ltd. | 1290 |
3 |
| Organo Corporation | 542 |
3 |
| Sichuan University | 628 |
3 |
| Shanghai Fanqing Environmental Engineering Co. Ltd. | 10 |
3 |
| Ronser Bio-Tech Sdn Bhd | 3 |
3 |
| Beijing Drainage Group Co., Ltd | 29 |
3 |
| Hunan Hengkai Environmental Protection Investment Company Limited | 6 |
3 |
| Alcoa Inc. | 251 |
2 |
| The Chugoku Electric Power Co., Inc. | 511 |
2 |
| Evoqua Water Technologies LLC | 934 |
2 |
| Other owners | 269 |