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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4526933 Polymeric active methylene compounds, their preparation and their use in azo polymersExpiredFeb 17, 84Jul 02, 85[C08F]
4454290 Stevioside analogsExpiredJun 11, 81Jun 12, 84[C07H]
4404367 Glucosubstituented diterpenoid sweetenersExpiredAug 26, 81Sep 13, 83[C07H, A23L]
4402990 Steviolmonoside analogsExpiredAug 26, 81Sep 06, 83[C07H, A23L]
4403072 Alkoxyethanols as solvents for coupling sulfonyl halides to polymeric aminesExpiredSep 09, 81Sep 06, 83[C08F]
4397997 Ultraturbulent coupling of polymeric diazonium saltsExpiredNov 04, 81Aug 09, 83[C08F]
4393174 Base hydrolysis of pendant amide polymersExpiredNov 09, 81Jul 12, 83[C08F]
4393175 Process for the continuous diazotization of water-soluble polymeric aminesExpiredSep 09, 81Jul 12, 83[C08F]
4386206 Tertiary amides as solvents in anthrapyridone synthesesExpiredSep 29, 81May 31, 83[C09B]
4382800 Free amine-containing polymeric dyesExpiredSep 28, 81May 10, 83[D06P, C09B]
4381185 Water-fast printing with water-soluble dyesExpiredJun 09, 81Apr 26, 83[C09B]
4381402 Steviol compoundsExpiredDec 17, 81Apr 26, 83[C07C]
4375357 Water-soluble fast polymeric black colorant, its preparation and use in dyes and inksExpiredJun 09, 81Mar 01, 83[C09B]
4353889 Rebaudioside analogsExpiredJun 11, 81Oct 12, 82[A61K, C07H]
4339237 Free amine-containing polymeric dyesExpiredAug 11, 80Jul 13, 82[C09B]
4332830 Sweetening with stevioside analogsExpiredSep 22, 80Jun 01, 82[A23L]
4328579 Voice band multiplex transmission systemExpiredMay 23, 80May 04, 82[H04J]
4316918 Products including edibles colored with polymeric red colorsExpiredJun 24, 80Feb 23, 82[A23L]
4309543 Process for preparing cyclic amidesExpiredMar 17, 80Jan 05, 82[C07D]
4302399 Acetylation of crude reaction products containing polymeric colorantsExpiredMar 10, 80Nov 24, 81[C09B]

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