- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/32 - Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
Patent holdings for IPC class C02F 3/32
Total number of patents in this class: 771
10-year publication summary
|
51
|
70
|
58
|
74
|
75
|
64
|
50
|
63
|
45
|
18
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chinese Research Academy of Environmental Sciences | 134 |
16 |
| Contech Engineered Solutions LLC | 283 |
14 |
| Kurita Water Industries Ltd. | 1283 |
11 |
| Shandong University | 1150 |
11 |
| Chongqing University | 304 |
9 |
| Centre National de La Recherche Scientifique | 11010 |
8 |
| The University of Akron | 623 |
8 |
| Oldcastle Infrastructure, Inc. | 98 |
8 |
| University of Central Florida Research Foundation, Inc. | 1247 |
7 |
| Hohai University | 222 |
6 |
| The Regents of the University of California | 20694 |
5 |
| Fudan University | 763 |
5 |
| Universite Montpellier 2 Sciences et Techniques | 155 |
5 |
| University of Massachusetts | 2312 |
5 |
| Gross-wen Technologies, Inc. | 19 |
5 |
| Stormtree Inc. | 10 |
5 |
| University of South Florida | 1877 |
4 |
| Arizona Board of Regents on behalf of Arizona State University | 2924 |
4 |
| Bauer Resources GmbH | 15 |
4 |
| BKT Co., Ltd. | 67 |
4 |
| Other owners | 627 |