STORK COLORPROOFING B.V.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5055365 Electrostatic proofing of negative color separationsExpiredNov 28, 88Oct 08, 91[G03G]
5030530 Method of electrostatic color proofingExpiredOct 17, 86Jul 09, 91[G03G]
5021313 Image reversal processExpiredJun 10, 89Jun 04, 91[G03G]
4820618 Method of forming a color proof by color electrostatographyExpiredOct 17, 86Apr 11, 89[G03G]
4764443 Method of image reversal in color electrophotographyExpiredOct 17, 86Aug 16, 88[G03G]
4556309 Electrophotographic imaging apparatus, particularly for color proofing and methodExpiredDec 29, 82Dec 03, 85[G03G]
4547061 Electrophotographic imaging apparatus and method particularly for color proofingExpiredFeb 16, 82Oct 15, 85[G03G]
4510223 Multicolor electrophotographic imaging processExpiredMay 27, 83Apr 09, 85[G03G]
4504126 Digital plate maker system and methodExpiredOct 04, 83Mar 12, 85[G02B]
4493549 Optical system for imaging an electrophotographic memberExpiredOct 04, 83Jan 15, 85[G03G]
4456367 Toning system for electrostatic imaging apparatusExpiredFeb 16, 82Jun 26, 84[G03G]
4408868 Digital plate maker system and methodExpiredApr 11, 80Oct 11, 83[G03G]
4398497 Liquid electrophotographic toner applicatorExpiredJun 22, 81Aug 16, 83[G03G]
4362804 Method of toner transfer with pulse biasExpiredJun 03, 81Dec 07, 82[G03G]
4358195 Electrophotographic color proofing apparatusExpiredApr 11, 80Nov 09, 82[G03B, G03G]
4294678 Apparatus and method for preventing contamination of sputtering targetsExpiredNov 28, 79Oct 13, 81[C23C]
4286031 Electrostatic multicolor composite printing method and apparatusExpiredJul 24, 80Aug 25, 81[G03G]
4284489 Power transfer networkExpiredSep 26, 78Aug 18, 81[C23C]
4284490 R.F. Sputtering apparatus including multi-network power supplyExpiredAug 21, 79Aug 18, 81[C23C]
4259005 Device and method for developing latent electrostatic imagesExpiredDec 01, 78Mar 31, 81[G03G]

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