- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
Patent holdings for IPC class C02F 11/12
Total number of patents in this class: 1138
10-year publication summary
|
105
|
120
|
100
|
100
|
81
|
69
|
52
|
31
|
35
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Anaergia Inc. | 108 |
28 |
| Veolia Water Solutions & Technologies Support | 534 |
23 |
| Metawater Co., Ltd. | 192 |
22 |
| Kemira Oyj | 1180 |
13 |
| Suez International | 330 |
11 |
| Dow Global Technologies LLC | 10247 |
9 |
| Kurita Water Industries Ltd. | 1173 |
9 |
| Degremont | 93 |
8 |
| Huber SE | 99 |
8 |
| SunCor Energy Inc. | 732 |
8 |
| Guangzhou Environmental Creative Solutions Co. Ltd | 8 |
8 |
| Evoqua Water Technologies LLC | 909 |
7 |
| Orege | 35 |
7 |
| Tsukishima Kikai Co., Ltd. | 114 |
7 |
| Guangzhou Pude Environmental Protection Equipment Ltd. | 9 |
7 |
| BCR Environmental Corporation | 27 |
6 |
| BKT Co., Ltd. | 65 |
6 |
| Ishigaki Company Limited | 47 |
6 |
| Sanuwave, Inc. | 88 |
6 |
| Lystek International Corp. | 24 |
6 |
| Other owners | 933 |