Patents by Inventor Mitusuro Sugita

Mitusuro Sugita 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 device and method of manufacturing the same
    Patent number: 7171095
    Abstract: An optical device comprising a substrate, a porous layer laid on the substrate having a pore diameter smaller than the wavelength of light and a crystal layer laid on the porous layer showing a refractive index greater than that of the porous layer is presented. The optical device is manufactured by a method comprising a step of forming a porous layer having a pore diameter smaller than the wavelength of light on the surface of a substrate and a step of forming a crystal layer showing a refractive index greater than that of the porous layer on the porous layer. Since the porous layer is clad, light can be confined with ease.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: January 30, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitusuro Sugita, Takao Yonehara