US Patent Issued to LABORATOIRE BIOSTHETIQUE KOSMETIK on Feb. 10 for "Colorant composition comprising leucoindigo for coloring fibers and fabrics" (German Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,787, issued on Feb. 10, was assigned to LABORATOIRE BIOSTHETIQUE KOSMETIK GMBH & Co. KG (Pforzheim, Germany).

"Colorant composition comprising leucoindigo for coloring fibers and fabrics" was invented by Gunther Augenstein (Pforzheim, Germany) and Christian Ader (Pforzheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a colorant composition for coloring fibers and fabrics comprising leucoindigo and at least one organic solvent. To achieve a stable composition, which is broadly applicable to different fibers and fabrics, the water content of the composition is less or equal to 10 wt.-% of the total weight of the com...