US Patent Issued to QWARZO on March 31 for "Impermeabilization treatment of paper or cardboard and impermeable paper or cardboard thus obtained" (Italian Inventor)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,415, issued on March 31, was assigned to QWARZO S.P.A. (Palazzolo Sull'Oglio, Italy).

"Impermeabilization treatment of paper or cardboard and impermeable paper or cardboard thus obtained" was invented by Luca Panzeri (Lomagna, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for the treatment of paper or cardboard surface is described that makes them impermeable to water, oil, and atmospheric gases, in particular oxygen. The invention also relates to the impermeable paper or cardboard thus obtained, which are particularly suitable for producing food product packaging or tableware."

The patent was filed on Feb. 15, 2022, under Applica...