C02F 11/121
By mechanical de-watering
Official title: by mechanical de-watering
C02F11/121 (By mechanical de-watering) appears on 805 US grants and 1,015 published applications in this corpus.
Search patents in C02F- Granted patents
- 805
- Published applications
- 1,015
- Assignees
- 695
- Inventors
- 2,337
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 10 | 7 |
| 2003 | 7 | 8 |
| 2004 | 8 | 16 |
| 2005 | 6 | 13 |
| 2006 | 8 | 18 |
| 2007 | 14 | 16 |
| 2008 | 13 | 13 |
| 2009 | 9 | 34 |
| 2010 | 19 | 35 |
| 2011 | 17 | 26 |
| 2012 | 17 | 33 |
| 2013 | 14 | 43 |
| 2014 | 23 | 41 |
| 2015 | 21 | 52 |
| 2016 | 22 | 58 |
| 2017 | 45 | 49 |
| 2018 | 43 | 60 |
| 2019 | 35 | 55 |
| 2020 | 57 | 62 |
| 2021 | 63 | 75 |
| 2022 | 55 | 82 |
| 2023 | 44 | 61 |
| 2024 | 51 | 74 |
| 2025 | 49 | 53 |
| 2026 | 24 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems, methods, and compounds for sustainable wastewater treatment and co-products thereof8 Sep 2026US 12,729,144 B2
- System and method of using nanobubbles in a dewatering process for a liquid-solid stream8 Sep 2026US 12,729,146 B2Moleaer, Inc.
- Dewatering method and system18 Aug 2026US 12,709,562 B2Weir Minerals Australia Ltd.
- Assemblies and methods for material extraction from retention collections11 Aug 2026US 12,703,585 B2Industrial Vacuum Transfer Services USA, LLC
- Assemblies and methods for material extraction from retention collections28 Jul 2026US 12,692,102 B2Industrial Vacuum Transfer Services USA, LLC
- Assemblies and methods for material extraction from retention collections24 Sep 2026US 2026/0285620 A1Industrial Vacuum Transfer Services USA, LLC
- Method and System for Fine Particulate Removal and Processing from a Coal Combustion Residual Surface Impoundment24 Sep 2026US 2026/0285729 A1United Conveyor Corporation
- Synergistic integrated methods for processing hydrocarbon/organic matter containing water streams17 Sep 2026US 2026/0274728 A1
- Measurement apparatus for and method of dewatered sludge10 Sep 2026US 2026/0265082 A1Senfit Oy
- Method for treating a suspension of solid particles in water using a polymer in a crystalline form of 2-acrylamido-2-methylpropanesulphonic acid sodium salt27 Aug 2026US 2026/0250162 A1Snf Group
Most cited
By later US patents
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Methods to de-sulfate saline streams107US 7,789,159 B12010
- Methods for treatment of waste streams97US 5,846,425 A1998
- Rotary drum filter with reciprocating nozzle means70US 5,470,472 ADorr-Oliver Incorporated · 1995
- Process for separate treatment and disposal of mixtures of solid and liquid, organic wastes66US 5,593,590 ATechnoagrar Consulting AG · 1997