Patents by Inventor Mitsunobu Nakazawa

Mitsunobu Nakazawa 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
    Patent number: 4685766
    Abstract: An optical device comprises an optical waveguide constituted of as a basic unit a core layer of a material having a relatively high refractive index and a clad layer of a material having a relatively low refractive index and covering said core layer, and heating means for heating said core layer to change the refractive index thereof, characterized in that when said core layer is constituted of a liquid, said core layer is heated by said heating means to a temperature such that said core layer does not boil.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: August 11, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukuo Nishimura, Eigo Kawakami, Toshiaki Asano, Masahiro Haruta, Hiroshi Takagi, Takashi Noma, Nobutoshi Mizusawa, Mitsunobu Nakazawa, Kunitaka Ozawa
  • Optical display utilizing thermally formed bubble in a liquid core waveguide
    Patent number: 4640592
    Abstract: An optical device comprises an optical waveguide having, as a basic unit, a core layer of a liquid having a relatively high refractive index and a clad layer having a relatively low refractive index and covering said core layer, and a heat-generating means for heating a part of said core layer to form a vapor bubble in said liquid of said core layer.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: February 3, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukuo Nishimura, Toshiaki Asano, Nobutoshi Mizusawa, Eigo Kawakami, Masahiro Haruta, Takashi Noma, Hiroshi Takagi, Mitsunobu Nakazawa, Kunitaka Ozawa
  • Image recording member
    Patent number: 3983564
    Abstract: An image recording member of a type, wherein a recording layer comprising graphite fluoride and a fluorine acceptor is formed on a supporting body or substrate, and an image is recorded on such recording member by applying energy thereto.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: September 28, 1976
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsunobu Nakazawa, Yoshiaki Araki, Masahiro Haruta, Kunio Satomi
  • Image recording member with zeolitic water containing compounds
    Patent number: 3974041
    Abstract: An image recording member according to the present invention comprises a recording layer containing at least one image forming component and at least one reducing agent in an electrically conductive matrix composed of at least one zeolitic water-containing compound.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: August 10, 1976
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Haruta, Yasushi Takatori, Akemi Shimosawa, Katsuhiko Nishide, Mitsunobu Nakazawa
  • Image recording member
    Patent number: 3936361
    Abstract: A recording member having a recording layer comprising an electrically conductive agent, an image forming agent, and a binder wherein the electrically conductive agent consists of at least one zeolitic water containing compound.
    Type: Grant
    Filed: March 26, 1974
    Date of Patent: February 3, 1976
    Inventors: Yasushi Takatori, Mitsunobu Nakazawa