- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/143 - Treatment of sludgeDevices 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: 95
10-year publication summary
|
1
|
4
|
7
|
15
|
17
|
6
|
12
|
9
|
9
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tongji University | 631 |
6 |
| Kurita Water Industries Ltd. | 1300 |
4 |
| Envicore Inc. | 15 |
4 |
| Veolia Water Solutions & Technologies Support | 533 |
3 |
| Heritage Research Group, LLC | 72 |
3 |
| Meunier Technologies Inc. | 10 |
3 |
| Evoqua Water Technologies LLC | 930 |
2 |
| Extrakt Process Solutions LLC | 40 |
2 |
| Graymont Western Canada Inc. | 54 |
2 |
| Lanxess Deutschland GmbH | 1155 |
2 |
| Sumitomo Metal Mining Engineering Co., Ltd. | 6 |
2 |
| University of Science and Technology Beijing | 316 |
2 |
| Vermeer Manufacturing Company | 672 |
2 |
| Yissum Research Development Company of The Hebrew University of Jerusalem Ltd. | 1360 |
2 |
| Ceco Environmental IP Inc | 80 |
2 |
| China Three Gorges Corporation | 230 |
2 |
| Beijing Drainage Group Co., Ltd | 29 |
2 |
| Institute of Urban Environment, Chinese Academy of Sciences | 21 |
2 |
| Three Gorges Environmental Technology Co., Ltd | 5 |
2 |
| Albemarle Corporation | 467 |
1 |
| Other owners | 45 |