Fiber Associates, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4477951 Viscose rayon spinning machineExpiredDec 15, 78Oct 23, 84[D06F, D02J]
4364889 Process for preparing a cotton-like rayon fiberExpiredMay 15, 80Dec 21, 82[D01F]
4324751 Process for preparing viscose rayonExpiredNov 05, 79Apr 13, 82[B06B]
4289875 Process for continuous filtration and aging of xanthated alkali celluloseExpiredOct 29, 79Sep 15, 81[C08B]
4284765 Automatic aging analyzer using a motor having a constant torqueExpiredDec 11, 79Aug 18, 81[C08B]
4275195 Process and apparatus for expediting the mercerization of alkali celluloseExpiredMay 24, 79Jun 23, 81[C08B]
4269973 Process and apparatus for making alkali cellulose in sheet formExpiredJan 18, 79May 26, 81[C08B]
4260739 Process and apparatus for preparing a homogeneous solution of xanthated alkali celluloseExpiredMay 11, 79Apr 07, 81[C08B, B01F]
4224866 Treatment of rayon stapleExpiredSep 13, 79Sep 30, 80[B06B, B30B]

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