Patents by Inventor Masaharu Ohyama

Masaharu Ohyama 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).

  • Electrostatic ink jet recording apparatus
    Patent number: 6364463
    Abstract: An electrostatic ink jet recording apparatus for flying an ink by applying a recording signal voltage between a recording electrode and a counter electrode. An optical density having any value in a range of 0.8 to 2.0 can be obtained by setting an angle of an ink meniscus at an tip of the recording electrode in a range of 0 to 65° or setting a distance from the tip of the recording electrode to the ink meniscus in a range of 0 to 1500 &mgr;m.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: April 2, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yosuke Mizuyama, Masaharu Ohyama