- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/147 - Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
Patent holdings for IPC class C02F 11/147
Total number of patents in this class: 134
10-year publication summary
|
6
|
3
|
3
|
9
|
17
|
29
|
24
|
33
|
16
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1167 |
13 |
| S.p.c.m. SA | 308 |
13 |
| Kurita Water Industries Ltd. | 1110 |
10 |
| Dow Global Technologies LLC | 10147 |
7 |
| Biovac Solutions Inc. | 6 |
5 |
| Orege | 36 |
3 |
| SunCor Energy Inc. | 838 |
3 |
| Shuimujingu Environmental Technology Co., Ltd. | 3 |
3 |
| SNF Group | 251 |
3 |
| Dexerials Corporation | 1826 |
2 |
| Excelsior Inc. | 18 |
2 |
| Ishigaki Company Limited | 49 |
2 |
| Martlin Distributing, LLC | 9 |
2 |
| Solenis Technologies Cayman, L.P. | 303 |
2 |
| Solenis Technologies, L.P. | 306 |
2 |
| SOLENIS TECHNOLOGIES, L.P., Solenis International, L.P., a Delaware limited partnership, DBA Solenis Technologies, L.P. | 155 |
2 |
| Tongji University | 440 |
2 |
| University of Science and Technology Beijing | 245 |
2 |
| BASF SE | 19740 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Other owners | 54 |