US Patent Issued to Xerox on June 24 for "Polyamides with pendent optical absorbers and related methods" (Canadian Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,326, issued on June 24, was assigned to Xerox Corp. (Norwalk, Conn.).

"Polyamides with pendent optical absorbers and related methods" was invented by Mihaela Maria Birau (Hamilton, Canada) and Valerie M. Farrugia (Oakville, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for producing a polyamide having an optical absorber pendent from the polyamide's backbone (OAMB-polyamide) may comprise: esterifying a hydroxyl-pendent optical absorber with a halogen-terminal aliphatic acid to yield a halogen-terminal alkyl-optical absorber; and N-alkylating a polyamide with the halogen-terminal alkyl-optical absorber to yield the OAMB-polyamide. Oth...