Patents by Inventor Yasuo Yamamoto

Yasuo Yamamoto 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: 7619610
    Abstract: A display device of the present invention comprises display unit cells having a display region that shows coloration, a shield region that shields the coloration, and a horizontal projection surface area adjustment unit that relatively changes the horizontal projection surface area in the display region by increasing or decreasing the shielding region; and a display method using the display device.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: November 17, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Jun Kawahara, Rie Ishii, Takayuki Takeuchi, Hiroaki Moriyama, Yasuo Yamamoto
  • Patent number: 7619041
    Abstract: A resin particle producing method that includes at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition contains a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: November 17, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Patent number: 7616373
    Abstract: The present invention provides display device particles that have positive or negative chargeability and have color and are produced using at least a calcium compound, in which a concentration of the calcium compound in the display device particle is 0.05% by weight or less in terms of a calcium element content, a process for producing the display device particles, as well as an image-display medium and an image-forming device each using the display device particles.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: November 10, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidehiko Soyama, Satoshi Hiraoka, Yasuo Yamamoto
  • Patent number: 7609435
    Abstract: A display medium including a light-modulating layer containing charged mobile particles assuming a color at a lightness corresponding to the dispersion state of the charged mobile particles and first particles with lower mobility than the charged mobile particles. The first particles assume a color at a lightness that is outside a lightness range that the charged mobile particles can exhibit.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: October 27, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroaki Moriyama, Yasuo Yamamoto, Jun Kawahara, Masaaki Abe
  • Publication number: 20090258921
    Abstract: Novel indole derivatives of formula (I) or a pharmaceutically acceptable salt thereof: wherein R1 is halogen, or alkyl, R2 is hydrogen, or halogen, Ar is phenyl, or thienyl, which may be substituted with halogen, alkyl, alkoxy, alkylthio, etc.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 15, 2009
    Inventors: Sumihiro NOMURA, Yasuo Yamamoto
  • Patent number: 7580017
    Abstract: A voltage is supplied from an image writing apparatus to the power receiving electrode of an electronic paper and an optical signal is applied to light receiving elements of the electronic paper from the LEDs of the image writing apparatus. Then, the light receiving elements perform a switching operation to apply the voltage to row electrodes and column electrodes of a display unit including a plurality of pixels, thus making display.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: August 25, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasunori Saito, Tsunemasa Mita, Yasuo Yamamoto, Hiroaki Moriyama, Minoru Koshimizu, Takeo Kakinuma, Tsutomu Ishii, Takayuki Takeuchi, Shigehiko Sasaki
  • Patent number: 7563901
    Abstract: The present invention relates to compounds represented by formula (1) and a process for producing the same. The use of these compounds can realize the production of carbapenem derivatives having potent antimicrobial activity and a wide antimicrobial spectrum in a safe and cost-effective manner.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: July 21, 2009
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Toshiro Sasaki, Takashi Ando, Yasuo Yamamoto, Takahiro Imai, Dai Kubota, Katsuhiko Noguchi, Nobuyuki Hori, Eiki Shitara, Kunio Atsumi, Shohei Yasuda
  • Patent number: 7524951
    Abstract: The present invention relates to compounds represented by formula (1) and a process for producing the same. The use of these compounds can realize the production of carbapenem derivatives having potent antimicrobial activity and a wide antimicrobial spectrum in a safe and cost-effective manner.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: April 28, 2009
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Toshiro Sasaki, Takashi Ando, Yasuo Yamamoto, Takahiro Imai, Dai Kubota, Katsuhiko Noguchi, Nobuyuki Hori, Eiki Shitara, Kunio Atsumi, Shohei Yasuda
  • Publication number: 20090103207
    Abstract: In a method for manufacturing a rotor hub for use in a spindle motor, free-cutting stainless steel is used as a material of the rotor hub. A slug of free-cutting stainless steel is subjected to a plastic working to form a disk mounting portion and a cylindrical surface positioned radially inwardly of the disk mounting portion. Then, a cylindrical disk fitting surface is formed by machining substantially the entirety of the cylindrical surface. The rotor hub contains A-type inclusions appearing in a cross section taken along a center axis of the disk mounting portion. The A-type inclusions are oriented in directions different than the center axis.
    Type: Application
    Filed: October 23, 2008
    Publication date: April 23, 2009
    Applicants: NIDEC CORPORATION, TOKUSEN KOGYO CO., LTD., KENT ENGINEERING CORP.
    Inventors: Toshiaki Miyauchi, Yasuo Yamamoto
  • Publication number: 20090036685
    Abstract: Disclosed is a process for producing an imidazothiazole derivative of formula (I) useful as an intermediate for the production of carbapenem derivatives having potent antimicrobial activity and a broad antimicrobial spectrum, that is, a novel method for nicotinoylating an imidazo[5,1-b]thiazole ring at its 7-position. The process comprises reacting a compound of formula (II) with a compound of formula (III).
    Type: Application
    Filed: July 21, 2006
    Publication date: February 5, 2009
    Inventors: Dai Kubota, Yasuo Yamamoto, Toshiro Sasaki, Takashi Ando, Eiki Shitara, Katsuya Sakata, Kenji Suzuki
  • Publication number: 20090023716
    Abstract: The present invention relates to a compound, useful as a mineralocorticoid receptor-modulating agent, of the following formula [I]: wherein Ring A is a benzene ring optionally having a substituent(s) other than R1 etc, R1 is a group of the formula: RaSO2NH— etc, Ra is an alkyl group etc, R2 and R3 are each a hydrogen atom, a phenyl group, an optionally substituted alkyl group etc, X is an oxygen atom etc, Y is a group of the formula: —C(?O)— etc, Ar is an optionally substituted aryl group or an optionally substituted heteroaryl group, Q is a single bond, an alkylene group etc, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: February 1, 2007
    Publication date: January 22, 2009
    Inventors: Toru Iijima, Yasuo Yamamoto, Hidenori Akatsuka, Takayuki Kawaguchi
  • Patent number: 7480088
    Abstract: A displaying method includes forming nuclear crystals of a metal on an electrode, and depositing a metal on a surface of the nuclear crystals from a solution including a metallic ion, so as to form particles having a particle diameter corresponding to a display color.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: January 20, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Jun Kawahara, Yasuo Yamamoto, Kei Shimotani
  • Patent number: 7463400
    Abstract: The invention provides an electrochromic display device having at least a pair of substrate electrodes and an electrolyte solution interposed between the pair of substrate electrodes. One substrate electrode of the pair of substrate electrodes has a porous structure on its surface. A monomolecular film formed of a first molecule that has a functional group that is capable of adsorbing to the porous structure is adsorbed to the porous structure via the functional group of the first molecule. A monomolecular film of a second molecule that has a functional group that is capable of chemically bonding to the first molecule is provided on the monomolecular film formed of the first molecule via a chemical bond between the functional group of the first molecule and the functional group of the second molecule. Further, at least one of the first molecule and the second molecule is an electrochromic dye.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: December 9, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Tatsuura, Yasuhiro Yamaguchi, Yasuo Yamamoto
  • Patent number: 7455944
    Abstract: The present invention provides a toner for developing electrostatic latent images, including resin particles containing a crystalline polymer and an amorphous polymer, wherein the amorphous polymer and the crystalline polymer satisfy the relationship represented by the following formula (1), and a method for manufacturing the toner of the invention. The present invention also provides a developer for electrostatic latent images including the toner of the invention and a carrier; and an image forming method using the toner of the invention. Further the invention provides a method for manufacturing a dispersion of resin particles. ?a??c?1.05[(cal/ml)1/2(25° C.)]??Formula (1) In formula (1), ?a represents a solubility parameter of the amorphous polymer, and ?c represents a solubility parameter of the crystalline polymer.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 25, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hideo Maehata, Yasuo Yamamoto, Satoshi Hiraoka, Yasuo Matsumura, Hirotaka Matsuoka, Yuki Sasaki, Fumiaki Mera
  • Patent number: 7457024
    Abstract: The image display device of the present invention includes: a display layer that comprises a photochromic compound and whose regions, which have been irradiated with visible light, can be optically rewritten in a color corresponding to the color of visible light irradiated thereon; a light-emitting layer in which multiple luminescent elements are arranged in a matrix pattern, the elements irradiating visible light to each different region of the display layer by emitting light; and a drive unit provided with an obtaining unit that obtains image data. Based on image data obtained with the obtaining unit, the drive unit drives each luminescent element corresponding to each pixel of an image according to the image data to irradiate the visible light of a color corresponding to each pixel of the image of the image data.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: November 25, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takayuki Takeuchi, Yasuo Yamamoto, Jun Kawahara, Hiroaki Moriyama, Rie Ishii
  • Patent number: 7436577
    Abstract: The present invention provides a display medium comprising a display layer which selectively displays white or black color, and a light-modulating layer provided on the display layer including mobile fine particles which show coloration in a dispersed state, a display device using the display medium, and a display method using the display medium.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: October 14, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroaki Moriyama, Yasuo Yamamoto, Jun Kawahara, Rie Ishii, Takayuki Takeuchi
  • Publication number: 20080234439
    Abstract: A resin particle producing method that includes at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition contains a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone.
    Type: Application
    Filed: April 23, 2008
    Publication date: September 25, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Patent number: 7420020
    Abstract: A producing method of resin particles, which comprises at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition is one selected from Composition A, Composition B, or Composition C: (Composition A): a composition containing a vinyl-based monomer, lactone, a vinyl-based monomer polymerization catalyst for polymerizing the vinyl-based monomer, and a lactone polymerization catalyst for polymerizing the lactone (Composition B): a composition containing a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone (Composition C): a composition containing a vinyl-based monomer, a cyclic keteneacetal compound represented by the following general formula (1), and a radical polymerization initiator (in the general formula (1), R represents a ch
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: September 2, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Publication number: 20080166380
    Abstract: The invention provides a pharmaceutical formulation comprising drug-encapsulated polymer micelles formed from a block copolymer having a hydrophilic segment and hydrophobic segment, and has been subjected to high-pressure treatment. The invention also provides a treatment method for a block copolymer having a hydrophilic segment and a hydrophobic segment for formation of drug-encapsulated polymer micelles, the treatment method comprises a step of subjecting the block copolymer to high-pressure treatment.
    Type: Application
    Filed: May 23, 2007
    Publication date: July 10, 2008
    Inventors: Yasuo Yamamoto, Miho Kokubo
  • Publication number: 20080167475
    Abstract: The present invention relates to compounds represented by formula (1) and a process for producing the same. The use of these compounds can realize the production of carbapenem derivatives having potent antimicrobial activity and a wide antimicrobial spectrum in a safe and cost-effective manner.
    Type: Application
    Filed: February 15, 2008
    Publication date: July 10, 2008
    Inventors: Toshiro Sasaki, Takashi Ando, Yasuo Yamamoto, Takahiro Imai, Dai Kubota, Katsuhiko Noguchi, Nobuyuki Hori, Eiki Shitara, Kunio Atsumi, Shohei Yasuda