ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,606, issued on March 31, was assigned to BROTHER KOGYO K.K. (Nagoya, Japan).

"Ink ribbon cartridge having first and second protrusions to be fitted in first and second holes of frame of printing device, and printing device using the same" was invented by Yuya Nakamura (Nagoya, Japan) and Shinji Ukai (Kiyosu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink ribbon cartridge includes a first spool, a first case covering the first spool, a second spool, a second case covering the second spool, a first rib provided at the first case, a second rib provided at the second case, an ink ribbon, a first protrusion, and a second protrusion. The fir...