Patents by Inventor Takayuki Higashio

Takayuki Higashio 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 of an ink jet printer and an ink jet printer including an ink cartridge
    Patent number: 6286921
    Abstract: In a container, an ink exhausting detecting liquid permeable sponge and an ink permeable sponge are disposed with an isolation film therebetween. The ink exhaustion detecting liquid is oil based, and has a resistance value higher than that of ink, and a specific gravity smaller than that of ink. In usage, the isolation film is drawn out of the container, whereby the ink exhaustion detecting liquid permeable sponge is brought into contact with the ink permeable sponge.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: September 11, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Norihiro Ochi, Kohji Tsurui, Kouichi Fukushima, Kazuya Koyama, Hisashi Yoshimura, Kouzou Yamaguchi, Shigenori Morimoto, Takayuki Higashio