- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/12 - Treatment of sludge; Devices therefor by de-watering, drying or thickening
Patent holdings for IPC class C02F 11/12
Total number of patents in this class: 1128
10-year publication summary
|
117
|
105
|
118
|
100
|
99
|
82
|
67
|
43
|
27
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Anaergia Inc. | 111 |
28 |
| Metawater Co., Ltd. | 181 |
22 |
| Veolia Water Solutions & Technologies Support | 547 |
21 |
| Kemira Oyj | 1167 |
12 |
| Suez International | 304 |
10 |
| Dow Global Technologies LLC | 10147 |
9 |
| Kurita Water Industries Ltd. | 1110 |
9 |
| SunCor Energy Inc. | 838 |
9 |
| Degremont | 103 |
8 |
| Huber SE | 88 |
8 |
| Guangzhou Environmental Creative Solutions Co. Ltd | 8 |
8 |
| Orege | 36 |
7 |
| Tsukishima Kikai Co., Ltd. | 118 |
7 |
| Guangzhou Pude Environmental Protection Equipment Ltd. | 9 |
7 |
| BCR Environmental Corporation | 28 |
6 |
| Bill & Melinda Gates Foundation, William H. Gates III and Melinda F. Gates, both US citizens | 28 |
6 |
| BKT Co., Ltd. | 66 |
6 |
| Evoqua Water Technologies LLC | 904 |
6 |
| Ishigaki Company Limited | 49 |
6 |
| Lystek International Corp. | 23 |
6 |
| Other owners | 927 |