- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 11/121 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering
Patent holdings for IPC class C02F 11/121
Total number of patents in this class: 278
10-year publication summary
|
13
|
16
|
28
|
35
|
39
|
49
|
31
|
31
|
33
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Georgia Tech Research Corporation | 2943 |
6 |
| Suez International | 366 |
6 |
| Vermeer Manufacturing Company | 671 |
6 |
| Metawater Co., Ltd. | 200 |
5 |
| SunCor Energy Inc. | 734 |
5 |
| CDE Global Limited | 70 |
4 |
| Cranfield University | 93 |
4 |
| Biovac Solutions Inc. | 5 |
4 |
| Phibion Pty Ltd | 8 |
4 |
| Hitachi, Ltd. | 16094 |
3 |
| Alfa Laval Corporate AB | 1337 |
3 |
| Cambi Technology AS | 41 |
3 |
| Graymont Western Canada Inc. | 54 |
3 |
| Ishigaki Company Limited | 45 |
3 |
| Orege | 39 |
3 |
| Process Wastewater Technologies, LLC | 12 |
3 |
| China Academy of Aerospace Aerodynamics | 24 |
3 |
| Aries Gasification, LLC | 19 |
3 |
| Aries Clean Technologies, LLC | 22 |
3 |
| China Harbour Engineering Company Ltd. | 97 |
3 |
| Other owners | 201 |