ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,767, issued on April 7, was assigned to CANON K.K. (Tokyo).
"Ink cartridge and method for remanufacturing ink cartridge" was invented by Shigeki Fukui (Kanagawa, Japan), Shinichi Miyauchi (Kanagawa, Japan) and Hitoshi Takada (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink cartridge includes a casing and a seal member. The casing includes an ink storage section storing ink, an air communication hole that is a through hole to cause the ink storage section to communicate with air, and an air communication passage that is a groove connected to the air communication hole. The seal member covers an entire area of an opening of the a...