ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,670, issued on Nov. 18, was assigned to CANON K.K. (Tokyo).

"Cartridge unit" was invented by Noriyuki Komatsu (Shizuoka, Japan), Teruhiko Sasaki (Shizuoka, Japan), Tomonori Mori (Kanagawa, Japan) and Makoto Hayashida (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge unit includes: a first unit which includes a first supporting portion and a second supporting portion; and a second unit which includes a first supported portion, a second supported portion, and a storage member, the storage member including a memory contact, and a contact arrangement surface on which the memory contact is disposed. The second unit rotates from ...