Patents by Inventor Shouichi Komatsu

Shouichi Komatsu 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).

  • Surface acoustic wave device and method of manufacturing the same
    Patent number: 7038353
    Abstract: The invention provides a piezoelectric substrate in the form of a rectangular plate in which a Rayleigh wave is propagated, and an IDT and a reflector are provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector in the position of an imaginary node of a stress wave exiting the conductor strip, thereby providing a reflecting end face to reflect the stress wave.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: May 2, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Yoshio Maeda, Shouichi Komatsu, Yusuke Kinoshita
  • Surface acoustic wave device and its manufacturing method
    Publication number: 20030020367
    Abstract: There is provided a piezoelectric substrate (12) in the form of a rectangular plate in which a Rayleigh wave is propagated and an IDT (13) and a reflector (14) provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector (14) in the position of an imaginary node (J) of a stress wave (T) exiting the conductor strip, there by providing a reflecting end face (15, 16) for reflecting the stress wave.
    Type: Application
    Filed: September 5, 2002
    Publication date: January 30, 2003
    Inventors: Yoshio Maeda, Shouichi Komatsu, Yusuke Kinoshita