ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,639, issued on May 27, was assigned to SEKISUI CHEMICAL Co. Ltd. (Osaka, Japan).
"Interlayer film for laminated glass, and laminated glass" was invented by Jun Ishida (Shiga, Japan) and Hiromitsu Nishino (Shiga, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an interlayer film for laminated glass capable of suppressing color migration. In an interlayer film for laminated glass according to the present invention, when the interlayer film is arranged between two sheets of clear glass conforming to JIS R3202:1996 to obtain a laminated glass X, and parallel light transmittance is measured for the obtained laminated glass X, the interla...