Patents by Inventor Yukihiko Utamura

Yukihiko Utamura 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: 4218495
    Abstract: A Schottky barrier type solid-state element and a method of producing the same, the Schottky barrier type solid-state element comprising a Schottky barrier type element portion consisting of a metallic board and a semiconductor film layer provided on the metallic board, the metallic board being formed of such a metal as can form a Schottky barrier between itself and the semiconductor film layer, and a semiconductor-side terminal electrode provided on the external surface of the semiconductor film layer so as to obtain an ohmic contact therewith, wherein at least the semiconductor film layer is formed by what is called the ionized-cluster-beam deposition process.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: August 19, 1980
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Toshinori Takagi, Kiyoshi Morimoto, Yukihiko Utamura
  • Patent number: 4161418
    Abstract: A p-n junction type solid-state element having at least a pair of p-n junction type semiconductor layers formed of a p-type semiconductor and an n-type semiconductor joined with each other and a method of producing the same, in which the p-type semiconductor and n-type semiconductor are formed and joined by forming at least one of the semiconductors using what is called the ionized-cluster-beam deposition process which evaporates a material to be deposited to form a vapor, injects the vapor into a vacuum region to form clusters of atoms, ionizes the clusters and electrically accelerates ionized clusters onto a substrate thereby forming a layer thereon.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: July 17, 1979
    Assignee: Futaba Denshi Kogyo K. K.
    Inventors: Kiyoshi Morimoto, Yukihiko Utamura, Toshinori Takagi
  • Patent number: 4139857
    Abstract: A Schottky barrier type solid-state element and a method of producing the same, the Schottky barrier type solid-state element comprising a Schottky barrier type element portion consisting of a metallic board and a semiconductor film layer provided on the metallic board, the metallic board being formed of such a metal as can form a Schottky barrier between itself and the semiconductor film layer, and a semiconductor-side terminal electrode provided on the external surface of the semiconductor film layer so as to obtain an ohmic contact therewith, wherein at least the semiconductor film layer is formed by what is called the ionized-cluster-beam deposition process.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: February 13, 1979
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Toshinori Takagi, Kiyoshi Morimoto, Yukihiko Utamura
  • Patent number: 4098919
    Abstract: A process for producing a thin fluorescent film for electroluminescence includes the steps of heating a raw material, composed of a base material and an activator, within an enclosed type crucible so as to generate a mixed vapor, injecting the mixed vapor into a vacuum zone through means of an injection nozzle, projecting an electron beam into the injected mixed vapor so as to ionize the mixed vapor, accelerating the ionized mixed vapor by means of an electric field, and permitting the accelerated ionized mixed vapor to collide with a base plate so as to form a vapor-deposited film upon the base plate.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: July 4, 1978
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Kiyoshi Morimoto, Yukihiko Utamura, Toshinori Takagi
  • Patent number: 4066527
    Abstract: A method of producing a semiconductor device comprising the step of forming a laminated element film on a substrate made of a material easy to cleave and easy to dissolve in various solvents such as water by successively depositing materials of the laminated element film on the substrate by what is called the ionized-cluster-deposition process so that crystalline film layers oriented by the crystal axis of the substrate material may be made to grow on the substrate, separating the laminated element film from the substrate by dissolving the substrate material in a solvent, and forming the semiconductor device by furnishing the separated laminated element film with suitable electrodes, etc.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: January 3, 1978
    Assignee: Futaba Denshi Kogyo K. K.
    Inventors: Toshinori Takagi, Kiyoshi Morimoto, Yukihiko Utamura
  • Patent number: 4049993
    Abstract: A multi-digit fluorescent display tube comprising a multi-digit pattern display member including display units for respective digits disposed in parallel and composed of segment anodes, each segment anode having a phosphor layer, and at least one cathode stretched along the longitudinal direction of the pattern display member to confront the respective multi-digit pattern display units in common, wherein the cathode is disposed in an inclined manner and the perveance in each display unit is adjusted, so that when the cathode is heated and actuated by a direct current power source, the display brightness is substantially uniform in the display units for respective digits.
    Type: Grant
    Filed: May 25, 1976
    Date of Patent: September 20, 1977
    Assignee: Futaba Denshi Kogyo K. K.
    Inventors: Takao Kishino, Yukihiko Utamura
  • Patent number: 4047074
    Abstract: A multi-column fluorescent display tube having a filament cathode provided opposite to a plurality of fluorescent display sections, which comprises at least a filament damper made of an insulating material low in thermal conductivity and having contact sections for supporting and stretching the filament cathode under tension at the middle portion of the filament cathode, and filament damper supporters so formed that it can prevent electrification of the surface of the filament damper.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: September 6, 1977
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Takao Kishino, Nobuo Yamaguchi, Yukihiko Utamura
  • Patent number: 4047072
    Abstract: A multi-column fluorescent display tube having a casing composed of a base plate and a cover plate, multi-column pattern display sections each composed of a plurality of segment anodes with fluorescent material layers thereon provided on the upper surface of the base plate, cathodes provided opposite to the pattern display sections, electrification preventive layers provided around and in the vicinity of the segment anodes on the base plate and electrically connected to prevent electrification and to intercept an external electric field, and terminal lead-in wires provided outside the casing and air-tightly connected through the casing to the respective segment anodes, cathodes and electrification preventive layers.
    Type: Grant
    Filed: March 29, 1975
    Date of Patent: September 6, 1977
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Takao Kishino, Kiyoshi Morimoto, Yukihiko Utamura
  • Patent number: 4045704
    Abstract: A multi-digit fluorescent display tube is disclosed. The display tube includes a plurality of indicating patterns arranged in a row in spaced side-by-side relational along the longitudinal width of a substrate, a filament stretched along the longitudinal direction of the indicating patterns and a control grid disposed between the filament and the indicating pattern, wherein the control grid is positioned in different plane distances with respect to the filament so as to adjust the perveance in each of the indicating patterns and to obtain an uniform brightness of the indicating patterns.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: August 30, 1977
    Assignee: Futaba Denshi Kogyo K. K.
    Inventors: Takao Kishino, Yukihiko Utamura
  • Patent number: 4041348
    Abstract: A multi-figure fluorescent display tube includes in the casing a plurality of anode display portions formed of segment electrodes each having a fluorescent material layer thereon, cathodes and control electrodes disposed opposite to the anode display portions, lead-in wires led out in an air-tight manner from the casing and electrically connected to the segment electrodes, the control electrodes and the cathodes, a plurality of conductive sections each connected to adjacent common segment electrodes through a corresponding conductive wiring film, the lead-in wires for the segment electrode terminal each having at the end thereof in the casing a contact with a spring portion, the contact coming in contact with the corresponding conductive section by the action of the spring portion thereby establishing an electrical connection.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: August 9, 1977
    Assignee: Futaba Denshi Kogyo K. K.
    Inventors: Goro Eto, Yukihiko Utamura
  • Patent number: 4039699
    Abstract: A method of preparing a phosphor by injection of activator ions which become luminescent centers into crystals of a base material of the phosphor comprising the steps of generating ions of an activator, accelerating the activator ions by giving kinetic energy thereto, irradiating and injecting the accelerated activator ions into the base material, and agitating the base material.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: August 2, 1977
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Kiyoshi Morimoto, Yukihiko Utamura, Toshinori Takagi
  • Patent number: 3967125
    Abstract: A method of preparing a phosphor by injection of activator ions which become luminescent centers into crystals of a base material of the phosphor comprising the steps of generating ions of an activator, accelerating the activator ions by giving kinetic energy thereto, irradiating and injecting the accelerated activator ions into the base material, and agitating the base material.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: June 29, 1976
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Kiyoshi Morimoto, Yukihiko Utamura, Toshinori Takagi