- 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: 403
10-year publication summary
|
33
|
21
|
23
|
31
|
32
|
40
|
33
|
32
|
25
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 913 |
9 |
| Ovivo Inc. | 153 |
6 |
| Shimose Microbes Laboratory Corporation | 32 |
6 |
| Sumitomo Chemical Company, Limited | 8998 |
4 |
| Chinese Research Academy of Environmental Sciences | 128 |
4 |
| Enviromix, Inc. | 19 |
4 |
| Tongji University | 499 |
4 |
| The University of Akron | 653 |
4 |
| Mcfinney, LLC | 4 |
4 |
| Kataoka Bio Laboratory Co., Ltd. | 9 |
4 |
| BCR Environmental Corporation | 27 |
3 |
| Beijing University of Technology | 489 |
3 |
| D.C. Water & Sewer Authority | 28 |
3 |
| E's Inc. | 13 |
3 |
| GSR Solutions LLC | 9 |
3 |
| Hampton Roads Sanitation District | 32 |
3 |
| Ishigaki Company Limited | 47 |
3 |
| Kurita Water Industries Ltd. | 1182 |
3 |
| Menicon Co., Ltd. | 423 |
3 |
| Microbial Discovery Group, LLC | 66 |
3 |
| Other owners | 324 |