ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,604, issued on Oct. 28, was assigned to Eastman Chemical Co. (Kingsport, Tenn.).
"Treated waste plastic materials" was invented by Bruce Roger DeBruin (Gray, Tenn.), Kyle Lyn Collings (Jonesborough, Tenn.) and Robert Ryan Stanley (Church Hill, Tenn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Isolated quantities of plastic solids having greater than 70% by weight polyethylene terephthalate (PET) also include a) from 0.1% to 10% by weight polyvinyl chloride (PVC), and a moisture content of less than 4% by weight, or b) from 0.05% to 10% or 0.1% to 4% by weight halogens, or c) from 0.1% to 4% by weight polyvinyl chloride (PVC), and at least 0.1% by...