Patents by Inventor Akira Fujii

Akira Fujii 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).

  • Lens-incorporating optical waveguide, and method for manufacturing the same
    Publication number: 20070237454
    Abstract: A lens-incorporating optical waveguide includes: a core; a clad enclosing the cores; and a lens provided in the core so as to cross a propagating direction of light.
    Type: Application
    Filed: November 1, 2006
    Publication date: October 11, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Akira Fujii, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Shigemi Ohtsu, Eiichi Akutsu
  • Method for fabricating laminate-type dielectric element
    Patent number: 7272876
    Abstract: A method of producing a laminated dielectric element of high quality, free of delamination. A method of producing a laminated dielectric element 1 by alternately laminating dielectric ceramic layers 12 and base metal electrode layers 13, comprising the steps of printing electrodes by applying a paste material for the base metal electrodes onto the surfaces of at least one side of the ceramic green sheets, laminating and press-adhering the ceramic green sheets to fabricate a laminate thereof, dewaxing the laminate, reducing the electrodes to form base metal electrode layers by heating the laminate while flowing an atmospheric gas and by reducing the paste material for the base metal electrodes, and sintering the laminate.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: September 25, 2007
    Assignees: Nippon Soken, Inc., DENSO Corporation
    Inventors: Atsuhiro Sumiya, Eturo Yasuda, Hitoshi Shindo, Akira Fujii, Takashi Yamamoto, Toshiatsu Nagaya, Kumi Sawaguchi, Ryoji Kai
  • Flexible optical waveguide
    Patent number: 7248772
    Abstract: A flexible optical waveguide having a core in which light propagates; and a cladding portion with a smaller refractive index than the core, that surrounds the core, wherein the flexible optical waveguide has a flexible portion between both end portions thereof, and at least one end portion of the both end portions is more solid than the flexible portion, is provided, which flexible optical waveguide, while assuring flexibility, can be mounted with high accuracy.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: July 24, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toshihiko Suzuki, Shigemi Ohtsu, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Optical waveguide film, and light transmission and reception module
    Publication number: 20070140633
    Abstract: An optical waveguide film that can supply power at extremely low cost, and a light transmission and reception module using this film are provided. A macromolecular optical waveguide film is composed of a square-shaped waveguide core which extends in a film length direction, a conductive wires which extends in the film length direction and is arranged in parallel with the waveguide core, and a cladding which surrounds the waveguide core and the conductive wire. The two conductive wires are provided, and the waveguide core is provided between the two conductive wires.
    Type: Application
    Filed: February 12, 2007
    Publication date: June 21, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Optical waveguide and optical waveguide manufacturing method
    Publication number: 20070114684
    Abstract: The present invention provides an optical waveguide manufacturing method. A polymer resin with different refractive index from the polymer film is applied to a polymer film and is cured, so that a double-layered polymer film, which has a cladding layer and a core layer with higher refractive index than the cladding layer, is manufactured. The core layer is cut by the dicing saw having a blade for enabling cutting of a resin layer, so as to be processed into core portions of the optical waveguide. Cut concave portions of the core layer are filled with polymer resin having the same refractive index with the cladding layer. The core portions are further covered with the polymer resin, and the polymer resin is cured so that a cladding resin layer is formed.
    Type: Application
    Filed: June 22, 2006
    Publication date: May 24, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Kazutoshi Yatsuda, Akira Fujii, Keishi Shimizu, Eiichi Akutsu
  • Radio communication system and communication apparatus
    Publication number: 20070110126
    Abstract: The communication apparatus employing the non-coherent scheme is used in the UWB-impulse radio system. In order to make it possible to reliably realize long-distance communication, while observing the reference values of the average radiation power and the peak radiation power, and also to realize high-speed short-distance communication, the apparatus includes an impulse adjusting unit which adjusts, according to the distance between two communication apparatuses detected by the distance detecting unit, the amplitude and the repetition frequency of impulses used in radio communication between the two communication apparatuses.
    Type: Application
    Filed: April 11, 2006
    Publication date: May 17, 2007
    Applicant: Fujitsu Limited
    Inventors: Hidenori Sekiguchi, Akira Fujii, Masafumi Asai
  • Impulse generating device, communication device, and a computer-readable recording medium recording an impulse control program thereon
    Publication number: 20070110182
    Abstract: To realize variable control of the output value of impulses with a simple construction, the present device includes an impulse generating unit which generates impulses; and a control unit which controls an output value of impulses output from the impulse generating unit by changing an input signal that is input to the impulse generating unit for generating impulses.
    Type: Application
    Filed: April 14, 2006
    Publication date: May 17, 2007
    Applicant: Fujitsu Limited
    Inventors: Masafumi Asai, Hidenori Sekiguchi, Akira Fujii
  • IMAGE DISPLAY APPARATUS AND CONTROL METHOD THEREOF
    Publication number: 20070085777
    Abstract: An image display apparatus includes a display panel having an electron source, an acceleration electrode for accelerating electrons emitted from the electron source and phosphors for emitting light by collision of electrons accelerated by the acceleration electrode, and a detector for detecting a current flowing through the acceleration electrode during a non-display period. In addition, a controller is provided to decrease the luminance level, stop display driving or transmit warning information when the current detected becomes more than a predetermined value.
    Type: Application
    Filed: November 28, 2006
    Publication date: April 19, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Mitsutoshi Kuno, Osamu Sagano, Akira Fujii
  • Optical waveguide film, and light transmission and reception module
    Patent number: 7197221
    Abstract: An optical waveguide film that can supply power at extremely low cost, and a light transmission and reception module using this film are provided. A macromolecular optical waveguide film is composed of a square-shaped waveguide core which extends in a film length direction, a conductive wires which extends in the film length direction and is arranged in parallel with the waveguide core, and a cladding which surrounds the waveguide core and the conductive wire. The two conductive wires are provided, and the waveguide core is provided between the two conductive wires.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: March 27, 2007
    Assignee: Fuji Xeorx Co., Ltd
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Image display apparatus and control method thereof
    Patent number: 7180514
    Abstract: An image display apparatus includes a display panel having an electron source, an acceleration electrode for accelerating electrons emitted from the electron source and phosphors for emitting light by collision of electrons accelerated by the acceleration electrode, and a detector for detecting a current flowing through the acceleration electrode during a non-display period. In addition, a controller is provided to decrease the luminance level, stop display driving or transmit warning information when the current detected becomes more than a predetermined value.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: February 20, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsutoshi Kuno, Osamu Sagano, Akira Fujii
  • Bidirectional communication optical waveguide and manufacturing method thereof
    Publication number: 20070025671
    Abstract: The present invention provides a bidirectional communication optical waveguide which can adopt a configuration in which light sources having the same wavelengths are used and stray light is not inputted to either a light emitting device or a light receiving device, and the bidirectional communication optical waveguide realizes a bidirectional communication module. The bidirectional communication optical waveguide includes a main waveguide core and a sub-waveguide core. A main inclined plane is provided in a midway of an optical path in the main waveguide core. The sub-waveguide core is provided with a sub-inclined plane in one end portion, and is close to or in contact with the main waveguide core such that the sub-inclined plane and the main inclined plane face each other.
    Type: Application
    Filed: October 20, 2005
    Publication date: February 1, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Keishi Shimizu, Shigemi Ohtsu, Kazutoshi Yatsuda, Eiichi Akutsu, Akira Fujii, Toshihiko Suzuki
  • Flexible optical waveguide
    Publication number: 20070025672
    Abstract: A flexible optical waveguide having a core in which light propagates; and a cladding portion with a smaller refractive index than the core, that surrounds the core, wherein the flexible optical waveguide has a flexible portion between both end portions thereof, and at least one end portion of the both end portions is more solid than the flexible portion, is provided, which flexible optical waveguide, while assuring flexibility, can be mounted with high accuracy.
    Type: Application
    Filed: March 29, 2006
    Publication date: February 1, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Toshihiko Suzuki, Shigemi Ohtsu, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Sub-mount for mounting optical component, manufacturing method thereof, and light transmission and reception module
    Publication number: 20070019899
    Abstract: A sub-mount for mounting optical components includes a recess for mounting whose side wall is tapered. A light transmission and reception module includes the sub-mount for mounting optical component. The sub-mount is manufactured by forming a master mold of the sub-mount formed with projections and recesses including the recess for mounting of the sub-mount, applying liquid silicone rubber to the mater mold, curing the liquid silicone rubber to produce a mold for duplication, filling the curable material into the mold for duplication, curing the curable material, and separating the cured curable material from the mold for duplication.
    Type: Application
    Filed: February 22, 2006
    Publication date: January 25, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Optical waveguide film, and light transmission and reception module
    Publication number: 20070019914
    Abstract: An optical waveguide film that can supply power at extremely low cost, and a light transmission and reception module using this film are provided. A macromolecular optical waveguide film is composed of a square-shaped waveguide core which extends in a film length direction, a conductive wires which extends in the film length direction and is arranged in parallel with the waveguide core, and a cladding which surrounds the waveguide core and the conductive wire. The two conductive wires are provided, and the waveguide core is provided between the two conductive wires.
    Type: Application
    Filed: February 15, 2006
    Publication date: January 25, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Akira Fujii, Eiichi Akutsu
  • Sub-mount for mounting optical component and light transmission and reception module
    Publication number: 20070014523
    Abstract: A sub-mount includes a recess for holding a polymer optical waveguide film and recesses for embedding and holding a light emitting element and a light detecting element. The sub-mount further has an adhesive filling groove formed adjacent to respective recesses. When mounting the polymer optical waveguide film, the light emitting element, and the light detecting element onto the sub-mount, an adhesive is accurately applied and is prevented from flowing out as the adhesive filling grooves are provided.
    Type: Application
    Filed: March 28, 2006
    Publication date: January 18, 2007
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Shigemi Ohtsu, Toshihiko Suzuki, Keishi Shimizu, Akira Fujii, Kazutoshi Yatsuda, Eiichi Akutsu
  • Optical waveguide and process for manufacturing the same
    Publication number: 20060275004
    Abstract: The present invention provides an optical waveguide, which at least includes: a waveguide core having a cavity therein; and a clad which encloses the periphery of the waveguide core and has a smaller refractive index than the waveguide core, wherein the optical waveguide changes a direction of a part or all of propagated light by using a part or all of an interface between the waveguide core and the cavity as a reflecting surface. The present invention further provides a method for manufacturing the optical waveguide, which at least includes: forming a core having a cavity therein on a substrate; applying an uncured clad material to a side surface and an upper portion of the core while maintaining the cavity which allows an atmospheric gas to be present in the cavity; and curing the clad material by heat or light to seal the gas in the cavity.
    Type: Application
    Filed: November 16, 2005
    Publication date: December 7, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Akira Fujii, Toshihiko Suzuki, Keishi Shimizu, Kazutoshi Yatsuda, Shigemi Ohtsu, Eiichi Akutsu
  • Stage control method, a stage control system, and a semiconductor manufacturing equipment
    Patent number: 7130026
    Abstract: A method of controlling a stage comprising: acquiring a first moving speed of the stage based upon position information from a laser interferometer for measuring a position of the stage; controlling the moving speed of the stage based upon the first speed; determining a second moving speed of the stage based upon the number of rotation of a motor for moving the stage; controlling the moving speed of the stage based upon the second moving speed; and acquiring a ratio of the second moving speed to the first moving speed based upon the first moving speed.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: October 31, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Tsukasa Sugawara, Akira Fujii
  • Fuel injection device for internal combustion engine
    Publication number: 20060231311
    Abstract: A fuel injection device wherein when the combined natural resonant period of a piezo stack and a driving member constituting part of a piezo injector of a fuel injection device is denoted by T, and the voltage rise time taken from the moment the charging to the piezo stack is initiated until the piezo stack is charged to a target charge voltage is denoted by t, then, in order to prevent oscillating loads from being applied to the piezo stack after elapse of the voltage rise time t when t?0.5 T±0.1 T, the voltage rise time t that satisfies the relation 0.6T?t is set in a controller for the piezo injector and, thus, the voltage rise slope of the piezo stack immediately before reaching the end of the voltage rise time t is made gentler to suppress the expansion and contraction force occurring in the piezo stack and thereby enhance the long-term reliability of the piezo stack.
    Type: Application
    Filed: April 13, 2006
    Publication date: October 19, 2006
    Applicants: DENSO Corporation, Nippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Fujii, Osamu Hishinuma, Fumiaki Arikawa, Izumi Takahashi, Akira Kiyama
  • Stacked ceramic body and production method thereof
    Publication number: 20060210781
    Abstract: This invention provides a stacked ceramic body that prevents reaction between components of dielectric layers and components of electrode layers of an unsintered stacked body during sintering and in which both components do not easily form a liquid phase, and a production method of such a stacked ceramic body. A print portion 13 is formed on a green sheet 1, 12 containing lead by use of an electrode paste consisting of copper oxide as its main component. A desired number of print sheets 10 are stacked to give an unsintered stacked body 15. Degreasing is conducted in an atmosphere to degrease organic components. The print portion 13 is subjected to reducing treatment in a reducing atmosphere containing hydrogen and is converted to a print portion 13 containing copper as its main component. The unsintered stacked body 15 is sintered in a reducing atmosphere.
    Type: Application
    Filed: May 2, 2006
    Publication date: September 21, 2006
    Applicant: Denso Corporation
    Inventors: Toshiatsu Nagaya, Takashi Yamamoto, Akira Fujii, Atsuhiro Sumiya, Hitoshi Shindo, Eturo Yasuda
  • Circuit board module, circuit board chassis and electromagnetic shielding plate therefor
    Patent number: 7102897
    Abstract: The disclosure is concerned with An electromagnetic shielding plate comprising an electromagnetic shielding member of electrical conductivity and a front panel disposed to an end of the electromagnetic shielding member. The disclosure is also concerned with a circuit board chassis, which comprises a casing, guide rails disposed in the inside of the casing for inserting circuit boards and a plurality of electromagnetic shielding plates each comprising an electromagnetic shielding member and a front panel, the electromagnetic shielding plates being located between the circuit boards, wherein the electromagnetic shielding plates and the casing are electrically connected by means of front panels.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: September 5, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Tsukasa Sugawara, Akira Fujii, Hajime Shimada