ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,598, issued on Aug. 19.
"Production of glass sand" was invented by Cynthia Andela (Richfield Springs, N.Y.) and David Martin (N. Andover, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for producing a stream of glass sand from mixed recyclables comprises first and second pulverizing system, each comprising a size-reducing pulverizer and a size-separating trommel. The pulverizers and trommels are heated, so as to also serve as driers."
The patent was filed on March 4, 2022, under Application No. 17/803,144.
*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO...