- 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: 745
10-year publication summary
|
60
|
48
|
67
|
54
|
69
|
73
|
59
|
44
|
59
|
29
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chinese Research Academy of Environmental Sciences | 128 |
16 |
| Contech Engineered Solutions LLC | 278 |
15 |
| Kurita Water Industries Ltd. | 1195 |
11 |
| Shandong University | 1048 |
11 |
| Chongqing University | 275 |
9 |
| The University of Akron | 652 |
9 |
| Centre National de La Recherche Scientifique | 10464 |
8 |
| Oldcastle Infrastructure, Inc. | 107 |
8 |
| University of Central Florida Research Foundation, Inc. | 1186 |
7 |
| Hohai University | 212 |
6 |
| Fudan University | 688 |
5 |
| Universite Montpellier 2 Sciences et Techniques | 156 |
5 |
| University of Massachusetts | 2225 |
5 |
| Gross-wen Technologies, Inc. | 18 |
5 |
| Stormtree Inc. | 10 |
5 |
| Arizona Board of Regents on behalf of Arizona State University | 2644 |
4 |
| Bauer Resources GmbH | 16 |
4 |
| BKT Co., Ltd. | 67 |
4 |
| Carbon Sink Inc. | 32 |
4 |
| The Chugoku Electric Power Co., Inc. | 513 |
4 |
| Other owners | 600 |