US Patent Issued to Stanbee on Aug. 12 for "Methods for manufacturing footwear stiffeners" (New Jersey, Mississippi Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,130, issued on Aug. 12, was assigned to Stanbee Co. Inc. (Roseland, N.J.).

"Methods for manufacturing footwear stiffeners" was invented by Dale Martell (Jersey City, N.J.), Bruce Goldberg (Clifton, N.J.) and Leo Provencher (Pass Christian, Miss.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method is provided for making a microcellular shoe stiffener has first and second adhesive layers coextruded on opposite first and second surfaces of a stiffener core. The stiffener core may include a recycled polymeric material. Nitrogen in a supercritical fluid state is introduced into the extruder for the stiffener core to produce a closed cell foam with a ...