US Patent Issued to Applied Thin Films on Dec. 16 for "Protective internal coatings for porous substrates" (Illinois, Georgia Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,336, issued on Dec. 16, was assigned to Applied Thin Films Inc. (Skokie, Ill.).

"Protective internal coatings for porous substrates" was invented by Sankar Sambasivan (Chicago), Vikram S. Kaul (Atlanta) and Francis R. Chapman (Chicago).

According to the abstract* released by the U.S. Patent & Trademark Office: "A material contains open pores in which the channels and pores that are internally coated with at least one layer of phosphorus-containing alumina. Such material is formed by infiltrating a porous material one or more times with a non-colloidal, low-viscosity liquid coating precursor, drying, and curing the coating precursor to form a phosphorus-containing alumina layer wi...