- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/02 - Biological treatment
Patent holdings for IPC class C02F 11/02
Total number of patents in this class: 406
10-year publication summary
|
16
|
20
|
22
|
25
|
39
|
29
|
27
|
24
|
17
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 922 |
9 |
| Ovivo Inc. | 156 |
6 |
| Shimose Microbes Laboratory Corporation | 37 |
6 |
| Sumitomo Chemical Company, Limited | 9052 |
4 |
| Chinese Research Academy of Environmental Sciences | 128 |
4 |
| Enviromix, Inc. | 19 |
4 |
| Tongji University | 554 |
4 |
| The University of Akron | 634 |
4 |
| Veolia Water Solutions & Technologies Support | 535 |
4 |
| Mcfinney, LLC | 5 |
4 |
| Kataoka Bio Laboratory Co., Ltd. | 10 |
4 |
| BCR Environmental Corporation | 25 |
3 |
| Beijing University of Technology | 512 |
3 |
| BKT Co., Ltd. | 64 |
3 |
| D.C. Water & Sewer Authority | 25 |
3 |
| E's Inc. | 15 |
3 |
| GSR Solutions LLC | 8 |
3 |
| Hampton Roads Sanitation District | 35 |
3 |
| Ishigaki Company Limited | 45 |
3 |
| Kubota Corporation | 4189 |
3 |
| Other owners | 326 |