C02F 3/1231
Treatments of toxic sewage
Official title: {Treatments of toxic sewage}
C02F3/1231 (Treatments of toxic sewage) appears on 175 US grants and 5 published applications in this corpus.
Search patents in C02F- Granted patents
- 175
- Published applications
- 5
- Assignees
- 114
- Inventors
- 321
- Latest grant
- 9 Feb 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 17 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 14 | 0 |
| 1995 | 21 | 0 |
| 1996 | 14 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Biological-chemical treatment of liquid organic wastewater9 Feb 2016US 9,255,022 B2Infilco Degremont Inc.
- Method for the biological breakdown of effluent containing nitroaromatics19 Aug 2008US 7,413,655 B2Universität Stuttgart
- Biological system for degrading nitroaromatics in water and soils19 Feb 2002US 6,348,639 B1Idaho Research Foundation, Inc.
- Biological system for degrading nitroaromatics in water and soils1 Jan 2002US 6,334,954 B1
- Methods for the detoxification of nitrile and/or amide compounds17 Oct 2000US 6,132,985 ACytec Technology Corp.
- Method for retaining ammonia nitrogen and removing antibiotics in biological treatment of livestock wastewater10 Dec 2020US 2020/0385298 A1East China University of Science and Technology
- Non-polluting Biomass Waste Processor, Components and Processes for a Use by a Municipality, Industrial, Forestry and/or Agricultural Facility25 Jun 2020US 2020/0200383 A1
- Biological-chemical treatment of liquid organic wastewater7 Aug 2014US 2014/0217019 A1Infilco Degremont Inc.
- Method and system of digesting excess sludge9 Jul 2009US 2009/0173696 A1ES. Technologies Corp.
- Method for the biological breakdown of effluent containing nitroaromatics1 Jun 2006US 2006/0115887 A1Universität Stuttgart
Most cited
By later US patents
- Biodegradation of halogenated aliphatic hydrocarbons86US 4,713,343 AThe United States of America as represented by the Administrator of the U. S. Environmental Protection Agency · 1987
- Pulsing of electron donor and electron acceptor for enhanced biotransformation of chemicals70US 5,006,250 AThe Board of Trustees of the Leland Stanford Junior University · 1991
- Bioremediation of contaminated groundwater68US 5,384,048 AThe United States of America as represented by the United States Department of Energy · 1995
- Granular activated carbon-sequencing batch biofilm reactor (GAC-SBBR)64US 5,126,050 ASBR Technologies, Inc. · 1992
- Activated sludge wastewater treating process57US 4,537,682 AEnvironmental Research & Technology, Inc. · 1985