Patents by Inventor Isogai Yuji

Isogai Yuji 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).

  • Humidity-sensitive actuator
    Patent number: 5461274
    Abstract: A humidity-sensitive actuator includes a plate made of piezoelectric electrostrictive ceramic having a variable electric resistance region having a high moisture absorbing capability and defining a flat electrode attachment surface, and a high, fixed electric resistance region having a low moisture absorbing capability and defining a flat electrode attachment surface. The variable electric resistance region is joined to the high, fixed electric resistance region with electrodes on the flat electrode attachment surface on opposite sides of the plate for applying an electric voltage transversely through the plate.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: October 24, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Isogai Yuji, Hiroaki Yanagida, Masaru Miyayama