Phoenix Precision Graphics, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6055008 Electrostatic printer having two-dimensional humidity compensationExpiredJul 16, 97Apr 25, 00[B41J]
5942095 Method of continuous purification of liquid toner in an electrostatic printing systemExpiredDec 04, 97Aug 24, 99[B03C]
5748217 Charge compensation circuit for an electrostatic writing headExpiredNov 16, 95May 05, 98[B41J, G03G]
5659856 Variable pressure back-plate for liquid toningExpiredMar 16, 95Aug 19, 97[G03G]
5656146 Single phase fluid gas extractor for electrophoretic purifier systemsExpiredApr 26, 96Aug 12, 97[B01D]
5514269 Dual separator purification systemExpiredJul 27, 94May 07, 96[B01D]
5502551 Toning shoe employing a bifurcated return portExpiredMay 30, 95Mar 26, 96[G03G]
5442427 Concentrate stirring for continuous printingExpiredOct 04, 93Aug 15, 95[G03G]
5404210 Continuous purification of liquid tonersExpiredMar 02, 94Apr 04, 95[G03G]
5335055 Bidirectional toning processExpiredMay 20, 93Aug 02, 94[G03G]
5325159 Printer in closed housingExpiredSep 30, 92Jun 28, 94[G03G]
5296899 Segmented backing assembly for toning an electrostatic imageExpiredMar 09, 93Mar 22, 94[G03G]
5289239 Integrated air knife toner applicatorExpiredMar 09, 93Feb 22, 94[G03G]
5268721 Positive air pressure toner confining applicatorExpiredDec 30, 92Dec 07, 93[G03G]
5231455 Air jet cleaner for one pump color imagerExpiredAug 17, 92Jul 27, 93[G03G]
4987429 One-pump color imaging system and methodExpiredJan 04, 90Jan 22, 91[G03G, G01D]

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