Patents by Inventor Yasushi Akasuka

Yasushi Akasuka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • INK CARTRIDGE FOR INK-JET PRINTING APPARATUS
    Publication number: 20080036834
    Abstract: An ink cartridge for an ink jet printer having a housing having at least one wall. The ink cartridge further has at least two ink chambers for containing different ink accommodated in the housing. Ink supply ports are formed in one wall of the housing within each of the ink chambers. Each of the ink supply ports has an inner opening and an outer opening. The distance from the inner opening of a first ink supply port to that of a second ink supply port adjacent to the first ink supply port is different from a second distance from the outer opening of the first ink supply opening to that of the second ink supply port.
    Type: Application
    Filed: October 19, 2007
    Publication date: February 14, 2008
    Inventors: Minoru Usui, Satoshi Shinada, Takahiro Naka, Hisashi Miyazawa, Takeo Seino, Hisashi Koike, Takao Kobayashi, Masahiro Kanai, Yasuko Hirano, Yasushi Akasuka, Takayuki Iijima, Noriaki Okazawa, Hitoshi Matsumoto, Yasuhiro Ogura