ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,618, issued on June 24, was assigned to KYOCERA Document Solutions Inc. (Osaka, Japan).

"Polyarylate resin and electrophotographic photosensitive member" was invented by Jun Azuma (Osaka, Japan), Keiji Maruo (Osaka, Japan) and Kenji Kitaguchi (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polyarylate resin includes repeating units represented by formulas (1), (2), (3), and (4).A third percentage is greater than 0% and less than 50%. The third percentage is a percentage of the number of repeats of the repeating unit represented by formula (3) relative to the total of the number of repeats of the repeating unit represented by formula (...