Crosfield Electronics (USA) Limited

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5297256 Digital image processing system and methodExpiredApr 04, 91Mar 22, 94[G06F]
4893558 Image reproductionExpiredDec 23, 88Jan 16, 90[B41F]
4843379 Color displaysExpiredJun 27, 86Jun 27, 89[G03F]
4800379 Image display with movable magnificationExpiredApr 30, 87Jan 24, 89[G09G]
4770896 Method for making cylinders for output scannersExpiredJul 07, 87Sep 13, 88[B05D]
4771339 Method of recording imagesExpiredJan 20, 87Sep 13, 88[H04N]
4768101 Half-tone reproduction method employing overlapping scan linesExpiredMay 21, 87Aug 30, 88[H04N]
4758068 Controlling radiation beam diametersExpiredJan 22, 87Jul 19, 88[G02D, G02F]
4754153 Operating radiation sensors to avoid transfer lossExpiredMar 04, 87Jun 28, 88[H04N]
4751569 Recording beam control for color image reproductionExpiredDec 18, 86Jun 14, 88[H04N]
4727425 Pixel color modification using look-up tables in image reproduction systemExpiredJun 04, 86Feb 23, 88[H04N]
4724477 Image enhancement with color corrector in parallel with fringe signal generatorsExpiredAug 06, 85Feb 09, 88[H04N]
4724489 Electronic image generationExpiredOct 24, 86Feb 09, 88[H04N]
4700149 Matching beam modulatorsExpiredSep 16, 85Oct 13, 87[H01S]
4698515 Method of operating radiation sensorsExpiredMar 10, 86Oct 06, 87[H04N]
4698692 Radiation generating apparatus and methodExpiredOct 04, 85Oct 06, 87[H04N, G01D]
4668980 Video retouching systemsExpiredDec 20, 85May 26, 87[G03F]
4647963 Color enhancementExpiredSep 09, 85Mar 03, 87[H04N]
4628350 Image enhancementExpiredAug 16, 85Dec 09, 86[H04N]
4613897 Reproduction of colored imagesExpiredOct 08, 85Sep 23, 86[H04N]

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