ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,564, issued on Dec. 30, was assigned to TOYOBA Co. LTD. (Osaka, Japan).
"Heat-shrinkable polyester-based film roll" was invented by Shintaro Ishimaru (Tsuruga, Japan) and Masayuki Haruta (Tsuruga, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[PROBLEMS] It is an object of the present invention to provide a heat-shrinkable polyester-based film roll which can reduce defects caused during a heat shrinking step due to the variation of a heat shrinkage rate in the heat-shrinkable polyester-based film roll having the longitudinal direction as the main shrinkage direction, specifically, defects of the film when covering an object by a wrap-around me...