Plasmon Data Systems, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5406540 Optical disk recording performanceExpiredNov 22, 93Apr 11, 95[G11B]
5137617 Optical disk manufactureExpiredAug 09, 89Aug 11, 92[C25D]
4928132 Optical data storage mediumExpiredFeb 08, 88May 22, 90[B05D, G03C, G01D, B32B]
4866696 Pre-formatted moth-eye type optical data storage member and methodExpiredFeb 26, 88Sep 12, 89[G11B]
4802736 InterferometersExpiredDec 11, 86Feb 07, 89[G02B]
4786585 Image forming and data storageExpiredMay 13, 86Nov 22, 88[G03C, G11B, G01D]
4724444 Data storage mediumExpiredOct 06, 86Feb 09, 88[B05D, G03C, G01D, B32B]
4616237 Data storage mediumExpiredSep 26, 83Oct 07, 86[B05D, G03C, G01D, B32B]

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