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).
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Patent number: 9431570Abstract: 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: GrantFiled: October 31, 2014Date of Patent: August 30, 2016Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
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Publication number: 20150050770Abstract: 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: ApplicationFiled: October 31, 2014Publication date: February 19, 2015Inventors: Tokuaki NIHASHI, Masatomo SUMIYA, Minoru HAGINO, Shunro FUKE
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Patent number: 8888914Abstract: 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: GrantFiled: April 16, 2010Date of Patent: November 18, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
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Patent number: 8377211Abstract: 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: GrantFiled: February 1, 2007Date of Patent: February 19, 2013Assignee: National Institute for Materials ScienceInventors: Masatomo Sumiya, Mikk Lippmaa, Tsuyoshi Ohnishi, Eiji Fujimoto, Hideomi Koinuma
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Publication number: 20120067410Abstract: 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: ApplicationFiled: March 29, 2010Publication date: March 22, 2012Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Nobuyuki Matsuki, Yoshihiro Irokawa, Kenji Itaka, Hideomi Koinuma, Masatomo Sumiya
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Patent number: 7820246Abstract: 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: GrantFiled: June 15, 2004Date of Patent: October 26, 2010Assignee: Japan Science and Technology AgencyInventors: Masatomo Sumiya, Shunro Fuke
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Publication number: 20100197069Abstract: 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: ApplicationFiled: April 16, 2010Publication date: August 5, 2010Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
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Publication number: 20100058987Abstract: 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: ApplicationFiled: February 1, 2007Publication date: March 11, 2010Inventors: Masatomo Sumiya, Mikk Lippmaa, Tsuyoshi Ohnishi, Eiji Fujimoto, Hideomi Koinuma
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Patent number: 7525131Abstract: 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: GrantFiled: August 29, 2006Date of Patent: April 28, 2009Assignees: National University Corporation Shizuoka University, Hamamatsu Photonics K.K.Inventors: Masatomo Sumiya, Shunro Fuke, Tokuaki Nihashi, Minoru Hagino
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Publication number: 20090065786Abstract: 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: ApplicationFiled: March 14, 2006Publication date: March 12, 2009Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, National University Corporation Shizuoka Univ.Inventors: Masatomo Sumiya, Shunro Fuke
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Publication number: 20070296335Abstract: 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: ApplicationFiled: March 7, 2005Publication date: December 27, 2007Inventors: Tokuaki Nihashi, Masatomo Sumiya, Minoru Hagino, Shunro Fuke
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Publication number: 20070132050Abstract: 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: ApplicationFiled: August 29, 2006Publication date: June 14, 2007Inventors: Masatomo Sumiya, Shunro Fuke, Tokuaki Nihashi, Minoru Hagino
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Publication number: 20070042560Abstract: 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: ApplicationFiled: June 15, 2004Publication date: February 22, 2007Applicant: JAPAN SCIENCE AND TECHNOLOGYInventors: Masatomo Sumiya, Shunro Fuke
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Patent number: 6239005Abstract: 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: GrantFiled: March 24, 1999Date of Patent: May 29, 2001Assignee: Shizuoka UniversityInventors: Masatomo Sumiya, Mamoru Yoshimoto, Shunro Fuke
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Patent number: 5569502Abstract: 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: GrantFiled: September 10, 1993Date of Patent: October 29, 1996Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideomi Koinuma, Masashi Kawasaki, Masatomo Sumiya