ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,355, issued on June 16.
"Coextruded hemp composite board" was invented by John D. Graham (Portland, Ore.) and John J. Bradley (Harlingen, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A co-extruded hemp composite board (CHB) is provided. By combining hemp feedstocks with virgin and/or recycled binder materials and subsequently coextruding them into a coextruded extrudate sheet, an environmentally friendly alternative to traditional construction materials is created. Secondary feedstocks and waste products from other production streams may be added during the coextrusion process to enhance the physical characteristics of the coextruded extruda...