Patents by Inventor Shinichi Kawate

Shinichi Kawate 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).

  • Patent number: 7819718
    Abstract: A method of making an electron-emitting device has the steps of disposing a film containing metal on a substrate, arranging a plurality of catalytic particles on the film containing metal, and heat-treating the substrate on which the plurality of catalytic particles are arranged under circumstance including hydrocarbon gas and hydrogen to form a plurality of carbon fibers. Catalytic particles contain Pd and at least one element selected from the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er and Lu, and 20˜80 atm % (atomic percentage) or more of the at least one element is contained in the catalytic particles relative to Pd.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: October 26, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20100066235
    Abstract: The shortest distance L [?m] from an arbitrary point on an exposed insulating surface on a base to a conductive member on the base and a sheet resistivity Rs [?/?] of the arbitrary point satisfy Rs×L2<4.2×1022 [?×?m2]. By this, in an image display apparatus having an electron-emitting device, an increase in the potential of an insulating surface on a substrate is suppressed and deterioration in the electron-emitting device is prevented, without using an antistatic film, etc.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 18, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazunari Ooyama, Hiroko Takada, Shinichi Kawate, Masafumi Kyogaku, Noriaki Homma
  • Patent number: 7611394
    Abstract: Provided are electron-emitting devices, electron sources, and image-forming apparatus improved in electron emission efficiency and in convergence of trajectories of emitted electrons. An electron-emitting device has a first electrode and a second electrode placed in opposition to each other with a gap between first and second electrodes on a surface of a substrate, and a plurality of fibers electrically connected to the first electrode and containing carbon as a main component, and the fibers are placed on a surface of the first electrode facing the second electrode.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: November 3, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20080106181
    Abstract: A method of making an electron-emitting device has the steps of disposing a film containing metal on a substrate, arranging a plurality of catalytic particles on the film containing metal, and heat-treating the substrate on which the plurality of catalytic particles are arranged under circumstance including hydrocarbon gas and hydrogen to form a plurality of carbon fibers. Catalytic particles contain Pd and at least one element selected from the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er and Lu, and 20˜80 atm % (atomic percentage) or more of the at least one element is contained in the catalytic particles relative to Pd.
    Type: Application
    Filed: December 13, 2005
    Publication date: May 8, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20070141943
    Abstract: Provided are electron-emitting devices, electron sources, and image-forming apparatus improved in electron emission efficiency and in convergence of trajectories of emitted electrons. An electron-emitting device has a first electrode and a second electrode placed in opposition to each other with a gap between first and second electrodes on a surface of a substrate, and a plurality of fibers electrically connected to the first electrode and containing carbon as a main component, and the fibers are placed on a surface of the first electrode facing the second electrode.
    Type: Application
    Filed: February 20, 2007
    Publication date: June 21, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Patent number: 7147533
    Abstract: The present invention provides a method of producing an electron emitting device using a carbon fiber using a catalyst, capable of preferably growing carbon fibers at a low temperature without the need of a high temperature process for growing the carbon fibers or a high temperature alloy process on a substrate, and growing the carbon fibers by a density capable of applying an electric field necessary for the electron emission further effectively. Using alloy particles containing Pd and at least one element selected from the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, and Lu as the catalyst, a dispersion of the alloy particles is applied on a carbon fiber producing subject surface for providing the alloy particles so as to grow the carbon fibers.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: December 12, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20060208654
    Abstract: Provided are electron-emitting devices, electron sources, and image-forming apparatus improved in electron emission efficiency and in convergence of trajectories of emitted electrons. An electron-emitting device has a first electrode and a second electrode placed in opposition to each other with a gap between first and second electrodes on a surface of a substrate, and a plurality of fibers electrically connected to the first electrode and containing carbon as a main component, and the fibers are placed on a surface of the first electrode facing the second electrode.
    Type: Application
    Filed: November 1, 2005
    Publication date: September 21, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Patent number: 7104859
    Abstract: In a method for manufacturing carbon fibers by means of a thermal CVD method through catalysts, the method capable of obtaining a uniform film thickness regardless of a growth position and a growth area on a substrate is provided. The substrate on which a catalyst layer is formed is disposed in a reaction container. An atmosphere in the reaction container is set to be a reduced pressure atmosphere including a carbon containing gas having a partial pressure of 10 Pa or less, and the substrate is heated in the atmosphere to grow carbon fibers on the catalyst layer.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: September 12, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeo Tsukamoto, Shinichi Kawate, Kazunari Oyama, Takahiro Sato, Shin Kitamura, Kazuya Miyazaki, Takashi Iwaki, Akira Shimazu
  • Patent number: 7074105
    Abstract: A catalyst for promoting growth of carbon fiber, which is capable of growing satisfactorily at a low temperature without needing complex process and applicable to such as electron emitting device. The catalyst used for growth of carbon fiber contains Pd and at least one element selected in the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er and Lu, in which 20˜80 atm % (atomic percentage) of the selected at least one element is contained to Pd.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: July 11, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Patent number: 7012362
    Abstract: Provided are electron-emitting devices, electron sources, and image-forming apparatus improved in electron emission efficiency and in convergence of trajectories of emitted electrons. An electron-emitting device has a first electrode and a second electrode placed in opposition to each other with a gap between first and second electrodes on a surface of a substrate, and a plurality of fibers electrically connected to the first electrode and containing carbon as a main component, and the fibers are placed on a surface of the first electrode facing the second electrode.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: March 14, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Patent number: 6867537
    Abstract: An image-forming apparatus has a rear plate including electron-emitting devices formed thereon, a face plate including a fluorescent film formed thereon and being disposed to face the rear plate, flat plate spacers disposed between the rear plate and the face plate, and an outer frame surrounding peripheral edges of the rear plate and the face plate. Electrons emitted from the electron-emitting devices are irradiated to the fluorescent film to thereby display an image under condition where an inner space of a container constructed by the rear plate, the face plate and the outer frame is evacuated through a vent tube into a depressurized state. The vent tube is attached to a side of the outer frame that is positioned across an imaginary extension of the flat-plate spacer in the longitudinal direction thereof, or to the face plate or the rear plate in the vicinity of that side of the outer frame.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: March 15, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasue Sato, Shinichi Kawate, Kazuyuki Ueda
  • Publication number: 20040192151
    Abstract: In a method for manufacturing carbon fibers by means of a thermal CVD method through catalysts, the method capable of obtaining a uniform film thickness regardless of a growth position and a growth area on a substrate is provided. The substrate on which a catalyst layer is formed is disposed in a reaction container. An atmosphere in the reaction container is set to be a reduced pressure atmosphere including a carbon containing gas having a partial pressure of 10 Pa or less, and the substrate is heated in the atmosphere to grow carbon fibers on the catalyst layer.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 30, 2004
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takeo Tsukamoto, Shinichi Kawate, Kazunari Oyama, Takahiro Sato, Shin Kitamura, Kazuya Miyazaki, Takashi Iwaki, Akira Shimazu
  • Publication number: 20040063839
    Abstract: The present invention provides a method of producing an electron emitting device using a carbon fiber using a catalyst, capable of preferably growing carbon fibers at a low temperature without the need of a high temperature process for growing the carbon fibers or a high temperature alloy process on a substrate, and growing the carbon fibers by a density capable of applying an electric field necessary for the electron emission further effectively. Using alloy particles containing Pd and at least one element selected from the group consisting of Fe, Co, Ni, Y, Rh, Pt, La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, and Lu as the catalyst, a dispersion of the alloy particles is applied on a carbon fiber producing subject surface for providing the alloy particles so as to grow the carbon fibers.
    Type: Application
    Filed: September 15, 2003
    Publication date: April 1, 2004
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20030006684
    Abstract: A catalyst for promoting growth of carbon fiber, which is capable of growing satisfactorily at a low temperature without needing complex process and applicable to such as electron emitting device.
    Type: Application
    Filed: March 27, 2002
    Publication date: January 9, 2003
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Patent number: 6472814
    Abstract: An electron-emitting device disclosed has stable electron emission characteristics with little variation, in high electron emission efficiency, in high definition, and at low driving voltage. The electron-emitting device disclosed is constructed in such structure that on a substrate there are a lower electrode, an insulating layer having pores, and an upper electrode stacked in this order, the insulating layer is an anodic oxide layer, and a carbon deposit is formed in the pores.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: October 29, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Yamanobe, Takeo Tsukamoto, Shinichi Kawate
  • Publication number: 20020153828
    Abstract: An electron-emitting device disclosed has stable electron emission characteristics with little variation, in high electron emission efficiency, in high definition, and at low driving voltage. The electron-emitting device disclosed is constructed in such structure that on a substrate there are a lower electrode, an insulating layer having pores, and an upper electrode stacked in this order, the insulating layer is an anodic oxide layer, and a carbon deposit is formed in the pores.
    Type: Application
    Filed: June 12, 2002
    Publication date: October 24, 2002
    Inventors: Masato Yamanobe, Takeo Tsukamoto, Shinichi Kawate
  • Publication number: 20020060516
    Abstract: Provided are electron-emitting devices, electron sources, and image-forming apparatus improved in electron emission efficiency and in convergence of trajectories of emitted electrons. An electron-emitting device has a first electrode and a second electrode placed in opposition to each other with a gap between first and second electrodes on a surface of a substrate, and a plurality of fibers electrically connected to the first electrode and containing carbon as a main component, and the fibers are placed on a surface of the first electrode facing the second electrode.
    Type: Application
    Filed: August 29, 2001
    Publication date: May 23, 2002
    Inventors: Shinichi Kawate, Takeo Tsukamoto
  • Publication number: 20020030435
    Abstract: An image-forming apparatus comprises a rear plate including electron-emitting devices formed thereon, a face plate including a fluorescent film formed thereon and being disposed to face the rear plate, a spacer in the form of a flat plate disposed between the rear plate and the face plate, and an outer frame surrounding peripheral edges of the rear plate and the face plate. Electrons emitted from the electron-emitting devices are irradiated to the fluorescent film to thereby display an image under condition where an inner space of a container constructed by the rear plate, the face plate and the outer frame is evacuated through a vent tube into a depressurized state. The vent tube is attached to a side of the outer frame that is positioned across an imaginary extension of the flat-plate spacer in the longitudinal direction thereof, or to the face plate or the rear plate in the vicinity of that side of the outer frame.
    Type: Application
    Filed: July 28, 1999
    Publication date: March 14, 2002
    Inventors: YASUE SATO, SHINICHI KAWATE, KAZUYUKI UEDA
  • Patent number: 6274972
    Abstract: An electron beam apparatus includes an electron source having an electron-emitting device, an electrode for controlling an electron beam emitted from the electron source, a target to be irradiated with an electron beam emitted from the electron source and a spacer arranged between the electron source and the electrode. The spacer has a semiconductor film on the surface thereof that is electrically connected to the electron source and the electrode.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 14, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Mitsutake, Shinichi Kawate, Naoto Nakamura, Yoshihisa Sano
  • Patent number: RE40103
    Abstract: An electron beam apparatus includes an electron source having an electron-emitting device, an electrode for controlling an electron beam emitted from the electron source, a target to be irradiated with an electron beam emitted from the electron source and a spacer arranged between the electron source and the electrode. The spacer has a semiconductor film on the surface thereof that is electrically connected to the electron source and the electrode.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: February 26, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideaki Mitsutake, Shinichi Kawate, Naoto Nakamura, Yoshihisa Sano