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Your search returned 266 patents.
( 422/170 in Current US Classification )
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Patent IDTitleDate Filed
6475453 Configuration for decomposing nitrogen oxides in a gas stream and method for using the configuration August 12, 1998
6471918 Filter, regeneration and soot-removing systems and applications August 3, 2000
6464944 Apparatus and method for controlled decomposition oxidation of gaseous pollutants January 12, 1999
6446431 Configuration for converting at least one exhaust emission component of an exhaust emission flow from an internal combustion engine and method for operating the configuration August 14, 2000
6436353 Gas recovering apparatus June 12, 1998
6432367 Indoor air quality gas phase return air cleaner February 26, 1998
6399030 Combined flue gas desulfurization and carbon dioxide removal system June 4, 1999
6395237 Circulating fluidized bed reactor with selective catalytic reduction February 13, 2000
6391266 Furnace adapted to produce lime for use in downstream flue gas desulfurization process August 14, 2000
6344177 Heat recovery and pollution abatement device October 22, 1999
6333014 Process for ammonia and methanol co-production February 24, 1998
6325967 Incineration process March 23, 1999
6315961 Apparatus for purifying a gas containing hydrogen sulphide and sulphur dioxide February 29, 2000
6312649 Bio-tower May 8, 2000
6309609 Apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, comprising a step for depleting the recycled solvent in sulphur May 6, 1999
6306357 Process and apparatus for absorbing hydrogen sulphide October 25, 1995
6303083 Method and system for SO2 and SO3 control by dry sorbent/reagent injection and wet scrubbing May 23, 1995
6267931 Reconfigurable waste treatment system February 3, 1994
6238628 Photolytic device for breakdown of organic chlorine compounds December 24, 1997
6224834 Silane oxidation exhaust trap April 16, 1998
6220022 Catalyst system for the treatment of exhaust gases from diesel engines August 4, 1999
6210454 Apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide May 3, 1999
6203762 Surgery plume filter device and method of filtering June 7, 1999
6192675 Exhaust gas purification device for an internal combustion engine November 2, 1998
6190620 Wet flue gas desulfurizer November 4, 1998
6174349 Continuous effluent gas scrubber system and method April 6, 1999
6159429 Apparatus for treating hydrocarbon and carbon monoxide gases April 30, 1999
6153150 Apparatus and method for controlled decomposition oxidation of gaseous pollutants January 12, 1998
6143254 Emissions reduction system & method therefor November 20, 1998
6139807 Apparatus for removing SO.sub.2 from flue gases and for producing ammonium sulfate solution July 10, 1998
6139806 Venturi reactor and scrubber with suckback prevention July 17, 1998
6132688 Method and apparatus for treating exhaust gas from a semiconductor fabrication machine May 6, 1998
6126906 Apparatus for removing harmful components in a semiconductor exhaust gas October 19, 1998
6071481 Zero grade air generating system March 3, 1998
6039783 Process and equipment for nitrogen oxide waste conversion to fertilizer December 3, 1996
6037169 Garbage disposal apparatus March 21, 1997
6001313 Stack device capable of removing dust particles, sulfur oxides and nitrogen oxides March 6, 1998
5998325 Composition and method for polymer moderated catalytic water formation September 29, 1997
5992142 No exhaust emission control method and arrangement March 16, 1999
5987885 Combination catalytic converter and heat exchanger that maintains a catalyst substrate within an efficient operating temperature range for emmisions reduction January 29, 1998
5955039 Coal gasification and hydrogen production system and method December 19, 1996
5939028 Combatting air pollution February 4, 1997
5928412 Method and apparatus for cleaning a vapour December 30, 1996
5925322 Fuel cell or a partial oxidation reactor or a heat engine and an oxygen-enriching device and method therefor July 18, 1997
5916132 Engine exhaust emission control system utilizing a catalyst carried in a porous flexible bag December 18, 1996
5910291 Surgery plume filter device and method of filtering June 3, 1996
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