ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,212, issued on May 20, was assigned to ZHUHAI NINESTAR MANAGEMENT Co. LTD. (Guangdong, China).

"Ink cartridge having print head" was invented by Yongqun Qiu (Guangdong, China), Mujia Liao (Guangdong, China) and Wei Shen (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink cartridge having a print head. The ink cartridge comprises an ink container, a print head housing, and a first chip; the ink container has an ink containing chamber; the ink containing chamber is used for containing ink; the print head housing has a mounting chamber; the ink container is mounted in the mounting chamber, and is used for supplying the ink to a prin...