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Expired Patents


Viewing 1 to 42 of 42.
Items Per Page
AnalysisPatent #Patent TitleLicense StatusLabIssue Date
View Analysis6300121Method for reducing bioavailability of lead by a lead-sequestering soil bacterium ExpiredNational Risk Management Research Laboratory10/9/2001
View Analysis5858763Thermophilic methanotrophs for high temperature oxidations ExpiredLand Remediation and Pollution Control Division1/12/1999
View Analysis5832468Method for improving process control by reducing lag time of sensors using artificial neural networks ExpiredAir Pollution Prevention and Control Division11/3/1998
View Analysis5788741Virtual impactor process for removing particles from an air stream ExpiredNational Exposure Research Laboratory8/4/1998
View Analysis5619937Sorbent melts for capture of metals from combustion gases ExpiredAir Pollution Prevention and Control Division4/15/1997
View Analysis5614410Bioremediation of soil or groundwater contaminated with compounds in creosote by two-stage biodegradation ExpiredGulf Ecology Division3/25/1997
View Analysis5543317Microbial degradation of trichloroethylene dichloroethylenes and aromatic pollutants AssignedGulf Ecology Division8/6/1996
View Analysis5487829Internal media cleaning device for aerobic fluidized bed reactors ExpiredNational Risk Management Research Laboratory1/30/1996
View Analysis5476788Solid phase bioremediation methods using lignin-degrading fungi ExpiredSustainable Technology Division12/19/1995
View Analysis5476640Low temperature destruction of toxics in pollutant air streams ExpiredAir Pollution Prevention and Control Division12/19/1995
View Analysis5447556Sample injection apparatus and method ExpiredHuman Exposure and Atmospheric Sciences Division9/5/1995
View Analysis5427994Lignosulfonate-modified calcium hydroxide for SO.sub.2 control during furnace injection ExpiredAir Pollution Prevention and Control Division6/27/1995
View Analysis5425802Virtual impactor for removing particles from an airstream and method for using same ExpiredNational Exposure Research Laboratory6/20/1995
View Analysis5396744Electrically induced radon barriers ExpiredAir Pollution Prevention and Control Division3/14/1995
View Analysis5322052Fireplace with destruction of products of incomplete combustion enhanced by a gaseous-fueled pilot burner ExpiredAir Pollution Prevention and Control Division6/21/1994
View Analysis5294553Method for the gravimetric determination of oil and grease ExpiredSustainable Technology Division3/15/1994
View Analysis5242825Biological remediation of creosote- and similarly-contaminated sites using Pseudomonas paucimobilis ExpiredGulf Ecology Division9/7/1993
View Analysis5236672Corona destruction of volatile organic compounds and toxics ExpiredAir Pollution Prevention and Control Division8/17/1993
View Analysis5233933Method of reducing transient emissions from rotary kiln incinerators and container for attaining the same ExpiredAir Pollution Prevention and Control Division8/10/1993
View Analysis5228335Method and apparatus for detection of catalyst failure on-board a motor vehicle using a dual oxygen sensor and an algorithm ExpiredNational Vehicle and Fuel Emissions Laboratory7/20/1993
View Analysis5221230Paint spraying booth with split-flow ventilation ExpiredAir Pollution Prevention and Control Division6/22/1993
View Analysis5185134Reduction of chlorinated organics in the incineration of wastes ExpiredAir Pollution Prevention and Control Division2/9/1993
View Analysis5179933Single chamber wood stove including gaseous hydrocarbon supply ExpiredAir Pollution Prevention and Control Division1/19/1993
View Analysis5135729Lignosulfonate-modified calcium hydroxide for SO.sub.2 control during furnace injection ExpiredAir Pollution Prevention and Control Division8/4/1992
View Analysis5132224Biological remediation of creosote- and similarly-contaminated sites ExpiredGulf Ecology Division7/21/1992
View Analysis5101670Automated proportional integrated sampling system ExpiredNational Exposure Research Laboratory4/7/1992
View Analysis5100643Processes for removing acid components from gas streams AssignedAir Pollution Prevention and Control Division3/31/1992
View Analysis5071755Biodegradation of aliphatic chloroethylene compounds ExpiredGulf Ecology Division12/10/1991
View Analysis5047221Processes for removing sulfur from sulfur-containing gases AssignedAir Pollution Prevention and Control Division9/10/1991
View Analysis5039350Method for the decomposition of halogenated organic compounds in a contaminated medium ExpiredNational Risk Management Research Laboratory8/13/1991
View Analysis5021229Reduction of chlorinated organics in the incineration of wastes ExpiredAir Pollution Prevention and Control Division6/4/1991
View Analysis5007404Woodstove for heated air forced into a secondary combustion chamber and method of operating same ExpiredAir Pollution Prevention and Control Division4/16/1991
View Analysis4961966Fluorocarbon coating method ExpiredHuman Exposure and Atmospheric Sciences Division10/9/1990
View Analysis4959315Biodegradation of chloroethylene compounds ExpiredGulf Ecology Division9/25/1990
View Analysis4925802Method for stimulating biodegradation of halogenated aliphatic hydrocarbons AssignedGulf Ecology Division5/15/1990
View Analysis4904283Enhanced fabric filtration through controlled electrostatically augmented dust deposition ExpiredAir Pollution Prevention and Control Division2/27/1990
View Analysis4902318Inlet apparatus for gas-aerosol sampling ExpiredHuman Exposure and Atmospheric Sciences Division2/20/1990
View Analysis4885139Combined electrostatic precipitator and acidic gas removal system ExpiredAir Pollution Prevention and Control Division12/5/1989
View Analysis4882309Lignosulfonate-modified calcium hydroxide for SO2 control during furnace injection ExpiredAir Pollution Prevention and Control Division11/21/1989
View Analysis4842748Methods for removing volatile substances from water using flash vaporization ExpiredRegion 2 Laboratory, Division of Environmental Science and Assessment6/27/1989
View Analysis4804521Process for removing sulfur from sulfur-containing gases AssignedAir Pollution Prevention and Control Division2/14/1989
View Analysis4786485Lignosulfonate-modified calcium hydroxide for SO.sub.2 control during furnace injection ExpiredAir Pollution Prevention and Control Division11/22/1988
AnalysisPatent #Patent TitleLicense StatusLabIssue Date
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