ALLEGRO NATURAL DYES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5651795 Mordant composition containing citric acid for dye processesExpiredSep 19, 96Jul 29, 97[D06P]
5611822 Indigo dye processExpiredApr 29, 96Mar 18, 97[D06P]
5509941 Mordant composition for natural dye processesExpiredMar 31, 95Apr 23, 96[D06P]
5494491 Indigo dye processExpiredDec 23, 94Feb 27, 96[C09B, D06P]
5403362 Mordant and method of dyeing fibersExpiredMay 10, 93Apr 04, 95[D06P, C09B]
5378246 Indigo dye processExpiredMay 10, 93Jan 03, 95[C09B, D06P]

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