US Patent Issued to Archroma (Switzerland) on Oct. 21 for "Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials" (French, German Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,519, issued on Oct. 21, was assigned to Archroma (Switzerland) GmbH (Pratteln, Switzerland).

"Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials" was invented by Hubert Jean-Luc Christnacher (Dietwiller, France), Fanny Ehret (Reiningue, France), Michael Nicollet (Village-Neuf, France), Jean-Christophe Graciet (Village-Neuf, France) and Georg Roentgen (Freiburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dye mixture comprising at least one dye of formula (formula) and at least one dye of formula (formula), wherein R1 is hydrogen or C1-C4alkyl, R2 is hydrogen or C1-C4alkyl, C1-C4alkoxy or sulfo, ...