Patents by Inventor Yukihasa Koizumi

Yukihasa Koizumi 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 jet printer shut-down control
    Patent number: 4516134
    Abstract: In an ink jet printer in which a nozzle generates ink drops from ink provided by an ink supply, the energizing signal to the nozzle is gradually decreased when the ink supply pressure is reduced, to avoid misting.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: May 7, 1985
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masayoshi Tamai, Tetsuo Iyoda, Yukihasa Koizumi