Patents by Inventor Masatomo Sumiya

Masatomo Sumiya 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: 9431570
    Abstract: The object is to provide a photoelectric surface member which allows higher quantum efficiency. In order to achieve this object, a photoelectric surface member 1a is a crystalline layer formed by a nitride type semiconductor material, and comprises a nitride semiconductor crystal layer 10 where the direction from the first surface 101 to the second surface 102 is the negative c polar direction of the crystal, an adhesive layer 12 formed along the first surface 101 of the nitride semiconductor crystal layer 10, and a glass substrate 14 which is adhesively fixed to the adhesive layer 12 such that the adhesive layer 12 is located between the glass substrate 14 and the nitride semiconductor crystal layer 10.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: August 30, 2016
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
  • Publication number: 20150050770
    Abstract: The object is to provide a photoelectric surface member which allows higher quantum efficiency. In order to achieve this object, a photoelectric surface member 1a is a crystalline layer formed by a nitride type semiconductor material, and comprises a nitride semiconductor crystal layer 10 where the direction from the first surface 101 to the second surface 102 is the negative c polar direction of the crystal, an adhesive layer 12 formed along the first surface 101 of the nitride semiconductor crystal layer 10, and a glass substrate 14 which is adhesively fixed to the adhesive layer 12 such that the adhesive layer 12 is located between the glass substrate 14 and the nitride semiconductor crystal layer 10.
    Type: Application
    Filed: October 31, 2014
    Publication date: February 19, 2015
    Inventors: Tokuaki NIHASHI, Masatomo SUMIYA, Minoru HAGINO, Shunro FUKE
  • Patent number: 8888914
    Abstract: The object is to provide a photoelectric surface member which allows higher quantum efficiency. In order to achieve this object, a photoelectric surface member 1a is a crystalline layer formed by a nitride type semiconductor material, and comprises a nitride semiconductor crystal layer 10 where the direction from the first surface 101 to the second surface 102 is the negative c polar direction of the crystal, an adhesive layer 12 formed along the first surface 101 of the nitride semiconductor crystal layer 10, and a glass substrate 14 which is adhesively fixed to the adhesive layer 12 such that the adhesive layer 12 is located between the glass substrate 14 and the nitride semiconductor crystal layer 10.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: November 18, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
  • Patent number: 8377211
    Abstract: Disclosed is a device for vacuum processing that performs vapor-deposition on a substrate being heated in a vacuum chamber; the device, wherein the chamber has a light transmissible window formed in a section of the chamber; the light transmissible window and a holding part holding the substrate are connected by a linear space isolated from other parts in the chamber; a laser emitter is installed outside the light transmissible window; and the laser emitter emits a laser beam to the substrate through the linear space, thereby heating the substrate. This device enables laser heating, eliminating conventional drawbacks such as a decrease in laser output.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: February 19, 2013
    Assignee: National Institute for Materials Science
    Inventors: Masatomo Sumiya, Mikk Lippmaa, Tsuyoshi Ohnishi, Eiji Fujimoto, Hideomi Koinuma
  • Publication number: 20120067410
    Abstract: A Schottky-barrier junction element 1 has a Schottky-barrier junction between an organic semiconductor 3 and an organic conductor 4. The inorganic semiconductor 3 is any one of nitride semiconductors, Si, GaAs, CdS, CdTe, CuInGaSe, InSb, PbTe, PbS, Ge, InN, GaSb, and SiC. A solar cell uses this Schottky-barrier junction element 1, with its photoelectric conversion section including the Schottky junction. A photoelectric conversion element uses this Schottky-barrier junction element 1, with its conversion section for interconverting light and electricity including the Schottky junction.
    Type: Application
    Filed: March 29, 2010
    Publication date: March 22, 2012
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Nobuyuki Matsuki, Yoshihiro Irokawa, Kenji Itaka, Hideomi Koinuma, Masatomo Sumiya
  • Patent number: 7820246
    Abstract: The present invention provides a method for growing a thin nitride film over a substrate and a thin nitride film device, in which the polarity of the thin nitride film can be controlled by a low temperature process. In the method for growing the thin nitride film over a substrate, a Ga face (2) and a N face (3) are formed over a c face sapphire (Al2O3) substrate (1), the Ga face (2) growing in +c face, and the N face (3) growing in ?c face.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: October 26, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Masatomo Sumiya, Shunro Fuke
  • Publication number: 20100197069
    Abstract: The object is to provide a photoelectric surface member which allows higher quantum efficiency. In order to achieve this object, a photoelectric surface member 1a is a crystalline layer formed by a nitride type semiconductor material, and comprises a nitride semiconductor crystal layer 10 where the direction from the first surface 101 to the second surface 102 is the negative c polar direction of the crystal, an adhesive layer 12 formed along the first surface 101 of the nitride semiconductor crystal layer 10, and a glass substrate 14 which is adhesively fixed to the adhesive layer 12 such that the adhesive layer 12 is located between the glass substrate 14 and the nitride semiconductor crystal layer 10.
    Type: Application
    Filed: April 16, 2010
    Publication date: August 5, 2010
    Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
  • Publication number: 20100058987
    Abstract: Disclosed is a device for vacuum processing that performs vapor-deposition on a substrate being heated in a vacuum chamber; the device, wherein the chamber has a light transmissible window formed in a section of the chamber; the light transmissible window and a holding part holding the substrate are connected by a linear space isolated from other parts in the chamber; a laser emitter is installed outside the light transmissible window; and the laser emitter emits a laser beam to the substrate through the linear space, thereby heating the substrate. This device enables laser heating, eliminating conventional drawbacks such as a decrease in laser output.
    Type: Application
    Filed: February 1, 2007
    Publication date: March 11, 2010
    Inventors: Masatomo Sumiya, Mikk Lippmaa, Tsuyoshi Ohnishi, Eiji Fujimoto, Hideomi Koinuma
  • Patent number: 7525131
    Abstract: Disclosed is a photoelectric surface including: a first group III nitride semiconductor layer that produces photoelectrons according to incidence of ultraviolet rays; and a second group III nitride semiconductor layer provided adjacent to the first group III nitride semiconductor layer and made of a thin-film crystal having c-axis orientation in a thickness direction, the second group III nitride semiconductor layer having an Al composition higher than that of the first group III nitride semiconductor layer.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: April 28, 2009
    Assignees: National University Corporation Shizuoka University, Hamamatsu Photonics K.K.
    Inventors: Masatomo Sumiya, Shunro Fuke, Tokuaki Nihashi, Minoru Hagino
  • Publication number: 20090065786
    Abstract: A method for growing a nitride thin film on a sapphire substrate, in which using no resists, miniaturization can be accomplished while relieving vexatious complication of the process; and a relevant device using nitride thin film. There is provided a method for growing a nitride thin film on a sapphire substrate, comprising irradiating a sapphire substrate having undergone high temperature hydrogen treatment with electron beams and depositing a nitride thin film on the substrate having undergone the electron beam irradiation by using the metal-organic chemical vapor deposition technique to thereby accomplish patterning of nitride thin film.
    Type: Application
    Filed: March 14, 2006
    Publication date: March 12, 2009
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, National University Corporation Shizuoka Univ.
    Inventors: Masatomo Sumiya, Shunro Fuke
  • Publication number: 20070296335
    Abstract: The object is to provide a photoelectric surface member which allows higher quantum efficiency. In order to achieve this object, a photoelectric surface member 1a is a crystalline layer formed by a nitride type semiconductor material, and comprises a nitride semiconductor crystal layer 10 where the direction from the first surface 101 to the second surface 102 is the negative c polar direction of the crystal, an adhesive layer 12 formed along the first surface 101 of the nitride semiconductor crystal layer 10, and a glass substrate 14 which is adhesively fixed to the adhesive layer 12 such that the adhesive layer 12 is located between the glass substrate 14 and the nitride semiconductor crystal layer 10.
    Type: Application
    Filed: March 7, 2005
    Publication date: December 27, 2007
    Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
  • Publication number: 20070132050
    Abstract: Disclosed is a photoelectric surface including: a first group III nitride semiconductor layer that produces photoelectrons according to incidence of ultraviolet rays; and a second group III nitride semiconductor layer provided adjacent to the first group III nitride semiconductor layer and made of a thin-film crystal having c-axis orientation in a thickness direction, the second group III nitride semiconductor layer having an Al composition higher than that of the first group III nitride semiconductor layer.
    Type: Application
    Filed: August 29, 2006
    Publication date: June 14, 2007
    Inventors: Masatomo Sumiya, Shunro Fuke, Tokuaki Nihashi, Minoru Hagino
  • Publication number: 20070042560
    Abstract: The present invention provides a method for growing a thin nitride film over a substrate and a thin nitride film device, in which the polarity of the thin nitride film can be controlled by a low temperature process. In the method for growing the thin nitride film over a substrate, a Ga face (2) and a N face (3) are formed over a c face sapphire (Al2O3) substrate (1) , the Ga face (2) growing in +c face, and the N face (3) growing in ?c face.
    Type: Application
    Filed: June 15, 2004
    Publication date: February 22, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY
    Inventors: Masatomo Sumiya, Shunro Fuke
  • Patent number: 6239005
    Abstract: In a method of forming a single crystal semiconductor directly on a metal layer, a metal layer is epitaxially grown on a surface an electrically insulating substrate having a single crystal structure, and a single crystal semiconductor layer is epitaxially grown on the metal layer. Particularly, on a c-face of a sapphire substrate, a platinum layer is epitaxially grown in a crystal orientation of (111) by sputtering, while the sapphire substrate is heat at about 400-700° C. After annealing at 600-900° C., a buffer layer made of gallium nitride is epitaxially grown on the platinum layer with a thickness of 500-2000 Å by MOVPE, while the sapphire substrate is heated at about 600° C. Finally, a single crystal gallium nitride layer is epitaxially grown on the buffer layer by MOVPE, while the sapphire substrate is heated at about 1000° C.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: May 29, 2001
    Assignee: Shizuoka University
    Inventors: Masatomo Sumiya, Mamoru Yoshimoto, Shunro Fuke
  • Patent number: 5569502
    Abstract: A process and apparatus for depositing a film as desired on the surface of a substrate yet at a low temperature, said process comprising introducing a product gas into a film deposition chamber having provided therein a substrate being mounted on a support, and depositing a film on the surface of said substrate by activating said product gas inside said film deposition chamber while applying ultrasonic oscillation to said substrate.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: October 29, 1996
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideomi Koinuma, Masashi Kawasaki, Masatomo Sumiya