C02F 11/14
With addition of chemical agents
Official title: with addition of chemical agents
C02F11/14 (With addition of chemical agents) appears on 556 US grants and 690 published applications in this corpus.
Search patents in C02F- Granted patents
- 556
- Published applications
- 690
- Assignees
- 428
- Inventors
- 1,514
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 5 |
| 2002 | 12 | 7 |
| 2003 | 9 | 18 |
| 2004 | 11 | 12 |
| 2005 | 9 | 19 |
| 2006 | 11 | 20 |
| 2007 | 8 | 12 |
| 2008 | 11 | 15 |
| 2009 | 15 | 26 |
| 2010 | 19 | 26 |
| 2011 | 11 | 13 |
| 2012 | 18 | 25 |
| 2013 | 5 | 11 |
| 2014 | 6 | 27 |
| 2015 | 12 | 34 |
| 2016 | 13 | 32 |
| 2017 | 23 | 29 |
| 2018 | 30 | 51 |
| 2019 | 25 | 43 |
| 2020 | 41 | 48 |
| 2021 | 37 | 46 |
| 2022 | 37 | 49 |
| 2023 | 29 | 31 |
| 2024 | 30 | 45 |
| 2025 | 36 | 26 |
| 2026 | 12 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Method to treat and minimize sludge from biorefineries30 Jun 2026US 12,668,519 B2Baker Hughes Oilfield Operations LLC
- Method and system for fine particulate removal and processing from a coal combustion residual surface impoundment2 Jun 2026US 12,643,804 B2United Conveyor Corporation
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- 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
- 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
- Coagulant compositions and methods of use6 Aug 2026US 2026/0225932 A1Locus Solutions Ipco, LLC
- Filtration aid compositions and methods of use30 Jul 2026US 2026/0217582 A1Locus Solutions Ipco, LLC
Most cited
By later US patents
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Process and apparatus for pathogen reduction in waste83US 5,013,458 ARDP Company · 1991
- Methods of treating subterranean zones penetrated by well bores79US 6,767,867 B2Halliburton Energy Services.Inc. · 2004
- Apparatus for treating effluents71US 5,145,256 AEnvironmental Equipment Corporation · 1992
- Method for dewatering of sludge69US 5,906,750 A1999