ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,408, issued on April 21, was assigned to KYOCERA Document Solutions Inc. (Osaka, Japan).

"Sheet postprocessing apparatus to which optional unit can be removably attached" was invented by Koji Murata (Osaka, Japan) and Tadahisa Kishimoto (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sheet postprocessing apparatus includes a postprocessing device that performs postprocessing on a sheet, and a drive unit having a motor for transporting the sheet. The postprocessing device includes an optional unit mounting base. On the optional unit mounting base, one of a folding unit having a function to fold the sheet, and a basic unit without the ...