- 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: 407
10-year publication summary
|
27
|
16
|
20
|
22
|
25
|
39
|
29
|
27
|
24
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 922 |
9 |
| Shimose Microbes Laboratory Corporation | 35 |
6 |
| Ovivo Inc. | 166 |
5 |
| Sumitomo Chemical Company, Limited | 9109 |
4 |
| Chinese Research Academy of Environmental Sciences | 128 |
4 |
| Enviromix, Inc. | 19 |
4 |
| Tongji University | 528 |
4 |
| The University of Akron | 642 |
4 |
| Mcfinney, LLC | 5 |
4 |
| Kataoka Bio Laboratory Co., Ltd. | 10 |
4 |
| BCR Environmental Corporation | 26 |
3 |
| Beijing University of Technology | 505 |
3 |
| D.C. Water & Sewer Authority | 26 |
3 |
| E's Inc. | 14 |
3 |
| GSR Solutions LLC | 9 |
3 |
| Hampton Roads Sanitation District | 35 |
3 |
| Ishigaki Company Limited | 47 |
3 |
| Kubota Corporation | 4050 |
3 |
| Kurita Water Industries Ltd. | 1230 |
3 |
| Menicon Co., Ltd. | 424 |
3 |
| Other owners | 329 |