ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,021, issued on Feb. 10, was assigned to Canon K.K. (Tokyo).

"Sheet processing apparatus and image forming system" was invented by Yasuhiro Nakahara (Kanagawa, Japan), Naoyuki Maeda (Shizuoka, Japan), Hideki Ohta (Shizuoka, Japan) and Jun Agata (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sheet processing apparatus to process a sheet includes a first conveyance path, a punching unit, a storage unit, a movement unit, and a receiving unit. The punching unit punches the sheet conveyed in the first conveyance path. The storage unit is removable from the sheet processing apparatus and stores punch chips generated by the punching unit....