US Patent Issued to Dai Nippon Printing on Sept. 23 for "Plastic film for optical applications, polarizing plate, and image display device" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,594, issued on Sept. 23, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).

"Plastic film for optical applications, polarizing plate, and image display device" was invented by Seiichi Isojima (Okayama, Japan) and Takashi Kuroda (Moriya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical plastic film that can have good scratch resistance against both a hard material and a soft material. An optical plastic film has a first surface and a second surface located on the opposite side to the first surface, wherein the indentation hardness of the cross section on the first surface side, the indentation hardness of the cross sect...