Patents by Inventor Hiroshi Yokoyama

Hiroshi Yokoyama 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: 8932666
    Abstract: A method is for producing an active matrix organic EL display element by an inkjet method to eject droplets (12) of a liquid via an ejection hole of a nozzle so as to form an organic EL layer. The liquid contains an organic EL layer material. An electrostatic attraction type inkjet apparatus (15) is used whose ejection hole (1b) has a diameter smaller than a diameter of the droplets (12). The droplets are ejected from the nozzle of the electrostatic attraction type inkjet apparatus (15) in such a manner that each of the droplets is 1 pl or less in amount. With this arrangement, the landed droplet dries quickly, and movement of the landed droplet is restricted. This makes it possible to form an organic EL layer accurately with low cost.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: January 13, 2015
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Toshio Tahira, Yasuo Nishi, Kazuhiro Murata, Hiroshi Yokoyama
  • Patent number: 8881792
    Abstract: The present invention is a method for manufacturing a titanium ingot (30), the method being characterized by comprising: a step of melting a titanium alloy for a predetermined time by cold crucible induction melting (CCIM); a step of supplying molten titanium (6) to a cold hearth (10), and separating high density inclusions (HDIs)(8) by precipitation in the cold hearth (10) while spraying a plasma jet or an electron beam onto the bath surface of the molten titanium (6); and a step of supplying a molten titanium starting material from which the HDIs (8) are separated by precipitation to a mold (20) to obtain the titanium ingot.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: November 11, 2014
    Assignee: Kobe Steel, Ltd.
    Inventors: Daisuke Matsuwaka, Daiki Takahashi, Hitoshi Ishida, Hiroshi Yokoyama
  • Publication number: 20140212798
    Abstract: A method of tilting liquid crystal molecules is presented. The method entails providing a substrate including a photoalignment layer on top of a layer of liquid crystal molecules. The photoalignment layer is exposed to patterned light that is incident on the substrate at a substantially normal angle. The patterned light is polarized in a polarization direction that is non-parallel to an incident surface of the substrate.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 31, 2014
    Applicant: KENT STATE UNIVERSITY
    Inventor: Hiroshi YOKOYAMA
  • Publication number: 20140182807
    Abstract: The present invention is a method for manufacturing a titanium ingot (30), the method being characterized by comprising: a step of melting a titanium alloy for a predetermined time by cold crucible induction melting (CCIM); a step of supplying molten titanium (6) to a cold hearth (10), and separating high density inclusions (HDIs)(8) by precipitation in the cold hearth (10) while spraying a plasma jet or an electron beam onto the bath surface of the molten titanium (6); and a step of supplying a molten titanium starting material from which the HDIs (8) are separated by precipitation to a mold (20) to obtain the titanium ingot.
    Type: Application
    Filed: August 16, 2012
    Publication date: July 3, 2014
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Daisuke Matsuwaka, Daiki Takahashi, Hitoshi Ishida, Hiroshi Yokoyama
  • Patent number: 8718358
    Abstract: The present invention is a filler metal installation position checking method and a filler metal installation position checking system for confirming difference between installation position and designed position of a filler metal embedded in a wall surface. A standard surface target 16 having known actual dimension and position to a wall surface 12 is provided to the wall surface 12 where a filler metal 14 is installed. The wall surface 12 is photographed together with the standard surface target 16 to create image data 18. Using actual position and dimension of the standard surface target 16 and position and dimension of the standard surface target 16 on an image displayed by the image data 18, the image data 18 is converted into corrected image data 20 displaying an image corrected in a manner that the image is photographed from front of the wall surface.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: May 6, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Yokoyama, Yuichi Yamamoto, Shinichi Ebata
  • Publication number: 20130209242
    Abstract: A cooling fan includes a boss section (12) connected to a rotary drive source, a plurality of blades (13) protruding outward from the boss section in a radial direction, and a cylindrical ring member (14) configured to annularly connect the vicinities of end sections outside in the radial direction of the plurality of blades. The plurality of blades (13) protruding outward from the boss section (12) in the radial direction are connected by the cylindrical ring member (14) in the vicinity of the end section outside in the radial direction. An air inlet groove (16) is formed at an end section in an axial direction of an air suction side of the ring member (14). The air inlet groove (16) is disposed between front regions in the rotation direction of all of the blades (13) on the ring member (14) and front regions in the rotation direction of the blades (13) adjacent thereto.
    Type: Application
    Filed: August 3, 2011
    Publication date: August 15, 2013
    Applicant: MITSUBA CORPORATION
    Inventors: Hidetake Ota, Hiroshi Yokoyama, Yukio Osawa
  • Patent number: 8451267
    Abstract: A pipe installation support apparatus includes: a display control device for displaying images of pipes already installed and a pipe to be attached on a display device; an input device for inputting a movement instruction to move or rotate at least one of the image of the pipes; and a moving device for translating or rotating at least one of three-dimensional data of the pipes already installed and the three-dimensional data of the pipe to be attached based on the movement instruction when the movement instruction is input from the input device, wherein when the moving device translates or rotates the three-dimensional data, the display control device moves the images of the pipes already installed and the pipe to be attached displayed on the display device.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: May 28, 2013
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Hiroshi Yokoyama, Toshiyuki Yamagata, Shinichi Ebata, Kazuo Narita
  • Patent number: 8422901
    Abstract: An image forming apparatus includes an image forming mechanism and an image fixing unit. The image forming mechanism forms a toner image on a recording sheet. The image fixing unit fixes the toner image onto the recording sheet. The image fixing unit includes a magnetic flux generator, a heat member, a magnetic flux adjuster, and a controlling member. The magnetic flux generator generates a magnetic flux. The heat member is heated inductively by the magnetic flux generated by the magnetic flux generator. The magnetic flux adjuster reduces the magnetic flux active on the heat member to form a heat reduction area in an outer circumferential surface of the heat member in a width direction thereof. The controlling member moves the magnetic flux adjuster to change the heat reduction area.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: April 16, 2013
    Assignee: Ricoh Co., Ltd.
    Inventors: Kenji Ishii, Aldyasu Amita, Ken Omura, Kenichi Hasegawa, Hiroshi Yokoyama, Satoshi Ueno
  • Publication number: 20130071615
    Abstract: A method of preparing substrates, including the steps of depositing metal particulates into a pillar form at a prescribed position of a substrate (1) by the use of a fine inkjet method, and then sintering the resultant to form a metal pillar (2).
    Type: Application
    Filed: November 13, 2012
    Publication date: March 21, 2013
    Inventors: Kazuhiro MURATA, Hiroshi YOKOYAMA, Daisuke ITOH, Akihito IZUMITANI, Noriaki HATA, Yorishige MATSUBA
  • Publication number: 20120314727
    Abstract: The ridge semiconductor laser is a semiconductor laser in which a carrier stopper layer made of an AlInAs compound, a clad layer made of an AlGaInAs compound, and an etching stopper layer made of an InGaAsP compound are stacked in sequence on one side of an active layer made of an AlGaInAs compound. The ridge semiconductor laser is provided with a ridge waveguide including, in a layer made of an InP compound, a diffraction grating made of an InGaAsP compound on the opposite side of the clad layer of the etching stopper layer.
    Type: Application
    Filed: January 27, 2011
    Publication date: December 13, 2012
    Inventors: Atsuo Kozen, Yasuyoshi Ote, Jun-ichi Asaoka, Kenji Hirai, Hiroshi Yokoyama
  • Publication number: 20120315502
    Abstract: There is provided a metal laminated structure in which a first metal layer containing tungsten is provided on a first surface of a second metal layer containing copper and a third metal layer containing tungsten is provided on a second surface of the second metal layer opposite to the first surface, and the first metal layer contains crystal grains of tungsten in a form of a columnar crystal extending in a direction perpendicular to the first surface of the second metal layer and the third metal layer contains crystal grains of tungsten in a form of a columnar crystal extending in a direction perpendicular to the second surface of the second metal layer, and a method for producing the metal laminated structure.
    Type: Application
    Filed: December 27, 2010
    Publication date: December 13, 2012
    Applicants: A.L.M.T. Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Koji Nitta, Shinji Inazawa, Akihisa Hosoe, Masatoshi Majima, Osamu Suwata, Hiroshi Yokoyama, Shinichi Yamagata, Yugaku Abe
  • Patent number: 8323526
    Abstract: The present invention is to provide a high quality smectic aerogel which is not brittle and a method for producing the smectic aerogel by using a host material comprising a mixture of a smectic liquid crystal and a UV-curable material or a host material comprising a smectic UV-curable material and by selecting an appropriate host material. A smectic aerogel comprising 4-nonyl-4?-cyanobiphenyl (9BC) and air bubbles can be produced, wherein hexagonal or pentagonal air cells are separated from each other by a smectic layer comprising a smectic liquid crystal. The thickness of the wall of the smectic layer at the boundaries of the air cells is about 24 ?m, which corresponds to about 6000 smectic layers. The thickness of the wall of the smectic layer at the boundaries can be varied. Particularly, the thickness can be reduced to as thin as several smectic layers.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: December 4, 2012
    Assignee: Japan Science and Technology Agency
    Inventors: Camilla Olivia Voeltz, Yoji Maeda, Yuka Tabe, Hiroshi Yokoyama
  • Patent number: 8293162
    Abstract: A method for producing a molded product consisting of a resin polymerized by a melt polycondensation reaction, comprising continuous feeding of a prepolymer in molten state from a prepolymer feeding port to a polymerization reactor, discharging from holes of a porous plate, followed by polymerization while dropping along a supporting substrate under reduced pressure, and molding by transferring to at least one molding machine in molten state without solidification, wherein transfer pressure to said molding machine is controlled so as to maintain at an arbitrary pressure from 0.1 to 100 MPa (absolute pressure).
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: October 23, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Hiroshi Yokoyama, Hiroshige Okamoto, Muneaki Aminaka, Kouji Takeuchi, Hironobu Yamauchi, Ken Someya
  • Patent number: 8247591
    Abstract: A nanoparticle includes a chain oligomer section having a hydrophilic group and fluoroalkyl groups respectively at its opposite terminals, a three-dimensional silica network section, and an organic chain having fluorine or silicon, and is represented by the following formula (2): where R? is independent H or independent alkyl group; X is the hydrophilic group and is selected from the group consisting of an OH group, an NCO group, an NH2 group, an NHR group (where R is alkyl group) and a COY group (where Y is a hydrophilic group); RF is the fluoroalkyl group having a carbon number of 2 to 10 and a molecular weight of 119 to 1000; 3D-SN is the three-dimensional silica network section; B is selected from the group consisting of an O, O?C—O, NH—C?O and NR—C?O (where R is alkyl group); E is O, O?C—O, NH—C?O or NR—C?O (where R is alkyl group); L is (CH2O)l—[Si(CH3)2O]k—(CH2O)l-?, (CF2)j-? or (CF2O)h-? where ? is COY group (where Y is hydrophilic group), NCO group, NH2 group, NHR group (R is alkyl group), R grou
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: August 21, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hideaki Yaegashi, Shoko Kano, Masahiko Yamanaka, Kentarou Watanabe, Hiroshi Yokoyama, Hideo Sawada
  • Patent number: 8202591
    Abstract: A polyethylene terephthalate resin which is obtained by melt polymerization at a reduced pressure or in an inert gas atmosphere and has the following properties (A) to (F): (A) the intrinsic viscosity [?] is 0.4-2.5 Dl/g; (B) the content of carboxy groups present at polymer ends is 30 meq/kg or lower; (C) the acetaldehyde content is 10 ppm or lower; (D) a hexafluoroisopropanol solution of the resin, when analyzed by the transmission method, has a hue which has an L value of 99 or larger and a b value of 0.4 or smaller; (E) the Mw/Mn is 1.8-2.3; and (F) the cyclic trimer content is 5 wt. % or lower.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: June 19, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Hiroshi Yokoyama, Hiroshige Okamoto, Muneaki Aminaka
  • Publication number: 20120136098
    Abstract: To provide a novel triazine-based compound exhibiting an ultraviolet blocking effect even in the long-wavelength region and being useful as an ultraviolet absorber with excellent light resistance, and to provide an ultraviolet absorber and a resin composition, which can maintain a long-wavelength ultraviolet-blocking effect for a long period of time. A compound represented by the following formula (1): wherein each of R1a, R1b, R1c, R1d and R1e independently represents a hydrogen atom or a monovalent substituent excluding OH, provided that at least one substituent represents a substituent having a Hammett's ?p value of 0.3 or more and substituents may combine with each other to form a ring, and each of R1g, R1h, R1i, R1j, R1k, R1m, R1n and R1p independently represents a hydrogen atom or a monovalent substituent, provided that substituents may combine with each other to form a ring.
    Type: Application
    Filed: July 28, 2010
    Publication date: May 31, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Ichiro Amasaki, Keizo Kimura, Yukie Watanabe, Kyosuke Tsumura, Hiroshi Yokoyama, Takumi Nakamura
  • Publication number: 20120100392
    Abstract: There is provided a metal laminated structure comprising a first metal layer, a second metal layer and a third metal layer, the first metal layer being disposed on one surface of the second metal layer, the third metal layer being disposed on the other surface of the second metal layer, the first metal layer including at least one of tungsten and molybdenum, the second metal layer including copper, the third metal layer including at least one of tungsten and molybdenum, and a method for producing the metal laminated structure.
    Type: Application
    Filed: June 8, 2010
    Publication date: April 26, 2012
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T Corp.
    Inventors: Koji Nitta, Masatoshi Majima, Shinji Inazawa, Yugaku Abe, Hiroshi Yokoyama, Osamu Suwata, Shinichi Yamagata
  • Publication number: 20110301304
    Abstract: A method for producing a polycondensation polymer, which comprises: introducing a prepolymer of a polycondensation polymer into a polymerization reactor through a feed opening in a molten state; discharging the introduced prepolymer through holes of a perforated plate; and then polycondensing the prepolymer under reduced pressure, while allowing the prepolymer to fall along a support, wherein the perforated plate has two or more areas and polycondensation is performed by introducing a prepolymer and/or a polymer modifier into each of the areas and discharging the introduced prepolymer and/or polymer modifier through holes of each of the areas.
    Type: Application
    Filed: May 20, 2011
    Publication date: December 8, 2011
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Hiroshi Yokoyama, Muneaki Aminaka
  • Patent number: 8060164
    Abstract: An input device that inputs information by a slide operation depending on an operation body contains a housing including an operation surface, a detection unit that is provided in the housing and detects a slide position inputted by a slide operation depending on the operation body, and an operation unit that covers at least a portion of the detection unit and is slide-operated along the operation surface of the housing. The operation unit has a convex shape which becomes thicker along the sliding direction from one portion of the operation surface of the housing and also which becomes thinner toward the other portion of the operation surface thereof.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: November 15, 2011
    Assignees: Sony Corporation, Sony Ericsson Mobile Communications Japan, Inc.
    Inventors: Kouichiro Takashima, Seiji Muramatsu, Tsutomu Takahashi, Shun Kayama, Yukiko Shimizu, Takashi Sawada, Satoshi Kushima, Yuuji Arataki, Hiroshi Yokoyama, Kazuhiko Takeda
  • Patent number: 8021593
    Abstract: A method of producing a three-dimensional structure contains the steps of: arranging a substrate close to a tip of a needle-shaped fluid-ejection body having a fine diameter supplied with a solution, ejecting a fluid droplet having an ultra-fine diameter toward a surface of the substrate by applying a voltage having a prescribed waveform to the needle-shaped fluid-ejection body, making the droplet fly and land on the substrate, and solidifying the droplet after the fluid droplet is landed on the substrate; further a three-dimensional structure has a fine diameter comprises droplets having an ultra-fine particle diameter, wherein the structure is grown by solidifying the droplets and stacking the solidified droplets.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: September 20, 2011
    Assignees: Sijtechnology, Inc., National Institute of Advanced Industrial Science and Technology
    Inventors: Kazuhiro Murata, Hiroshi Yokoyama