WEXFORD MANAGEMENT LLC

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5323842 Temperature-stabilized heat exchangerExpiredJun 05, 92Jun 28, 94[F23D]
5320052 Catalytic sulfur trioxide flue gas conditioningExpiredMar 01, 93Jun 14, 94[F23J]
5300270 Hot-side electrostatic precipitatorExpiredAug 20, 92Apr 05, 94[B03C, C01B, B01J]
5237939 Method and apparatus for reducing NOx emissionsExpiredAug 20, 92Aug 24, 93[F23J]
5233934 Control of NOx reduction in flue gas flowsExpiredAug 20, 92Aug 10, 93[F23D]
5122162 Control system for flue gas conditioningExpiredMar 19, 90Jun 16, 92[B03C]
5029535 Control of addition of conditioning agents to flue gasExpiredMay 14, 90Jul 09, 91[F23D]
5024171 Reduction of acidic emissions from combustion of sulfur-laden fuelsExpiredMar 19, 90Jun 18, 91[F23J]
4987839 Removal of particulate matter from combustion gas streamsExpiredMay 14, 90Jan 29, 91[F23J]
4966610 Conditioning of gas streams containing particulateExpiredJun 05, 89Oct 30, 90[B03C]
4903755 Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gasesExpiredApr 25, 88Feb 27, 90[F28D, B01J]
4739826 Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gasesExpiredJul 07, 86Apr 26, 88[F23J, B01J, B01D]
4602673 Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gasesExpiredOct 03, 84Jul 29, 86[F28D, B01J]
4466815 Gas conditioning apparatusExpiredMay 03, 82Aug 21, 84[B03C]
4333746 Gas conditioning means for a plurality of boilersExpiredApr 24, 81Jun 08, 82[B03C]

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