US Patent Issued to Archroma (Switzerland) on June 3 for "Use of reactive cross-linking agents for protein-containing substrates and processes for tanning and dyeing of leather" (Swiss, British Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,974, issued on June 3, was assigned to Archroma (Switzerland) GmbH (Pratteln, Switzerland).

"Use of reactive cross-linking agents for protein-containing substrates and processes for tanning and dyeing of leather" was invented by Daryl Miles Cassingham (Dorset, Great Britain), Laszlo Fekete (Basel, Switzerland), Michael Nicollet (Basel, Switzerland), Jean Christophe Graciet (Basel, Switzerland) and Georg Roentgen (Basel, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the use of reactive colourless and metal-free protein cross-linking agents for the cross-linking (tanning) of protein-containing substrates, s...