ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,263, issued on Sept. 22, was assigned to DUPONT SAFETY & CONSTRUCTION INC. (Wilmington, Del.).
"Process for utilizing off-color filament yarns" was invented by Aline Ferreira Mora (Sao Paulo) and Olivier Beat Noth (Fribourg, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process for utilizing wound packages of off-color filament yarn by: a) obtaining a plurality of wound packages of off-color filament yarn: b) classifying the plurality of wound packages, based on a pigment in the filament, into sets of wound packages; c) converting a first set of wound packages into first staple fibers; d) converting a second set of wound packages int...