Patents by Inventor Ikuo Kumagai

Ikuo Kumagai 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).

  • Patent number: 4388009
    Abstract: A line printer is provided with at least one cross flow fan positioned above the hammer actuators for directing an air flow across the actuators for cooling the same. The exiting heated air is ventilated to the outside and may pass through sound absorbers or mufflers in order to achieve quiet operation.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: June 14, 1983
    Assignee: Nippon Electric Company, Limited
    Inventors: Ikuo Kumagai, Yukiaki Koyanagi, Hiroshi Hidaka