ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,131, issued on May 20, was assigned to NISSEI ASB MACHINE Co. LTD. (Nagano, Japan).

"Manufacturing method and manufacturing apparatus for delamination container" was invented by Toshiteru Oike (Nagano, Japan), Yoichi Tsuchiya (Nagano, Japan) and Daizaburo Takehana (Nagano, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a manufacturing method for a delamination method, in a second injection molding including forming a second layer on an inner peripheral side of a first layer of a preform having a bottomed cylindrical shape, a second resin material is guided from an opening portion formed in the first layer toward the inner peripheral side of...