- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/143 - Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
Patent holdings for IPC class C02F 11/143
Total number of patents in this class: 61
10-year publication summary
|
0
|
0
|
1
|
4
|
7
|
15
|
16
|
4
|
9
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tongji University | 440 |
6 |
| Heritage Research Group, LLC | 48 |
3 |
| Meunier Technologies Inc. | 9 |
3 |
| Envicore Inc. | 8 |
3 |
| Graymont Western Canada Inc. | 32 |
2 |
| Sumitomo Metal Mining Engineering Co., Ltd. | 7 |
2 |
| University of Science and Technology Beijing | 245 |
2 |
| Institute of Urban Environment, Chinese Academy of Sciences | 20 |
2 |
| Albemarle Corporation | 514 |
1 |
| Anaergia Inc. | 111 |
1 |
| Arizona Board of Regents on behalf of Arizona State University | 2226 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
1 |
| BCR Environmental Corporation | 28 |
1 |
| Dexerials Corporation | 1826 |
1 |
| Extrakt Process Solutions LLC | 37 |
1 |
| Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences | 195 |
1 |
| Huazhong University of Science and Technology | 930 |
1 |
| Kemira Oyj | 1167 |
1 |
| Kurita Water Industries Ltd. | 1110 |
1 |
| Socovar, Societe en Commandite | 26 |
1 |
| Other owners | 26 |