Patents

Catalyzed Dye System Patented by Estée Lauder Companies

Beauty giant is awarded US Patent No. 11,369,554 B2.

US Patent No. 11,369,554 B2 (Geoffrey Hawkins, Daniel Thomas Nowlan)’ ELC Management LLC, Melville, NY, has patented a dye system for application to a substrate. The system is comprised of at least one dye precursor; an oxidizing agent; and a catalyst. The dye system has a pH of at least about 10.04.

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