Patents by Inventor Ken?apos;ichiro Takahashi

Ken?apos;ichiro Takahashi 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).

  • Optical waveguide device
    Publication number: 20040052458
    Abstract: An object of the present invention is to provide an optical device that can restrain the dependence of the center wavelength of reflection at the diffraction grating upon the voltage applied to the piezoelectric element from shifting depending on the temperature. An embodiment of the optical device has the following structure.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 18, 2004
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Mitsuaki Tamura, Kazuhito Saito, Tomomi Sano, Ken?apos;ichiro Takahashi
  • Broadcast program recording programming device and method
    Publication number: 20040019909
    Abstract: In case of the occurrence of reception failure due to rain and the like during the broadcast of a reserved program, all or part of the reserved program is not successfully received.
    Type: Application
    Filed: March 18, 2003
    Publication date: January 29, 2004
    Inventor: Ken?apos;ichiro Takahashi
  • Optical device
    Publication number: 20020003927
    Abstract: An object of the present invention is to provide an optical device that can restrain the dependence of the center wavelength of reflection at the diffraction grating upon the voltage applied to the piezoelectric element from shifting depending on the temperature. An embodiment of the optical device has the following structure.
    Type: Application
    Filed: August 6, 2001
    Publication date: January 10, 2002
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Mitsuaki Tamura, Kazuhito Saito, Tomomi Sano, Ken?apos;ichiro Takahashi