Patents by Inventor Takehiro Yamamoto

Takehiro 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).

  • Publication number: 20030223340
    Abstract: An optical pickup apparatus is provided with two light sources; an objective lens for focusing light originating from each light source on an optical recording medium; a light separation optical element for transmitting or reflecting the light originating from each light source; a collimator lens for converting the light originating from each light source into a generally parallel beam; an upward-directing mirror for changing the optical path of the light originating from each light source by reflecting it; reflectors disposed between the light separation optical element and the respective light sources, for reflecting parts of light beams emitted from the light sources, respectively; photodetectors for detecting light beams reflected from the reflectors, respectively; and an APC circuit for controlling the power of the light beam emitted from each light source in accordance with a detection output of each photodetector.
    Type: Application
    Filed: April 16, 2003
    Publication date: December 4, 2003
    Inventors: Kohji Miyake, Takehiro Yamamoto, Nobumasa Ono, Masahiro Nakamura
  • Publication number: 20030119787
    Abstract: A compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof: 1
    Type: Application
    Filed: October 7, 2002
    Publication date: June 26, 2003
    Applicant: Meiji Seika Kaisha Ltd.
    Inventors: Kenichi Fushihara, Chika Kikuchi, Tetsuya Matsushima, Kenichi Kanemoto, Eriko Satoh, Takehiro Yamamoto, Kokichi Suzuki
  • Patent number: 6576627
    Abstract: A compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof: wherein R1 represents hydrogen atom, an alkyl group, a substituted alkyl group and the like; R2 and R3 represent hydrogen atom, an alkyl group, a substituted alkyl group, an alkoxyl group and the like; X represents —CH2—, —O—, or —NH—; A represents the following group (II): [in which R7 and R8 represent hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group and the like; R9 and R10 represents hydrogen atom, a halogen atom, hydroxyl group, phenyl group, an alkyl group and the like] and the like; and E represents hydrogen atom and the like, which has inhibitory activity against carboxypeptidase B and is useful for therapeutic and/or preventive treatment of a thrombotic disease.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 10, 2003
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Kenichi Fushihara, Chika Kikuchi, Tetsuya Matsushima, Kenichi Kanemoto, Eriko Satoh, Takehiro Yamamoto, Kokichi Suzuki
  • Publication number: 20020052989
    Abstract: A data processing apparatus and a data processing method easily realizable of a transparent processing of a high-speed serial data. The data processing apparatus (1) comprises: a serial data conversion section for converting serial data to predetermined set of parallel data; a transparent data information detection section (10) for detecting information concerning transparent data, from the parallel data; an effective byte number operation section for operating an effective byte number of the parallel data; a transparent data conversion section (20) for converting transparent data of the parallel data, and moving predetermined data after the transparent data forward, in the parallel data; an address control section (304) for determining addresses at which the parallel data are rearranged; and a data array section (30) for moving predetermined data to one predetermined set of parallel data from another predetermined set of parallel data.
    Type: Application
    Filed: October 25, 2001
    Publication date: May 2, 2002
    Applicant: ANDO ELECTRIC CO., LTD.
    Inventors: Takehiro Yamamoto, Takao Inoue
  • Publication number: 20010011782
    Abstract: Molten polymers are forced into T dies combined to form a multiple T die, the molten polymers are extruded through the T dies in monolayer. The monolayers extruded through the T dies are superposed and laminated outside the multiple T die while the polymers are in a molten or semi-molten state to form a intermediate molten multilayer. The multiple T die is advanced into a space between an open top half mold and a bottom half mold of a compression mold to deliver the intermediate multilayer onto the bottom half mold. The intermediate multilayer is cut to a predetermined length on the bottom half mold, and is processed for compression molding in the compression mold to form a multilayer article. A molding cycle for molding the multilayer article is carried out automatically at a remarkably improved manufacturing efficiency.
    Type: Application
    Filed: February 7, 2001
    Publication date: August 9, 2001
    Applicant: Toshiba Kikai Kabushiki Kaisha
    Inventors: Akinori Ide, Takehiro Yamamoto
  • Patent number: 6186765
    Abstract: Molten polymers are forced into T dies combined to form a multiple T die, the molten polymers are extruded through the T dies in monolayer. The monolayers extruded through the T dies are superposed and laminated outside the multiple T die while the polymers are in a molten or semi-molten state to form a intermediate molten multilayer. The multiple T die is advanced into a space between an open top half mold and a bottom half mold of a compression mold to deliver the intermediate multilayer onto the bottom half mold. The intermediate multilayer is cut to a predetermined length on the bottom half mold, and is processed for compression molding in the compression mold to form a multilayer article. A molding cycle for molding the multilayer article is carried out automatically at a remarkably improved manufacturing efficiency.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: February 13, 2001
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Akinori Ide, Takehiro Yamamoto
  • Patent number: 5799116
    Abstract: An electromagnetic wave-to-optical signal converting and modulating device includes: a substrate presenting the electro-optical effect; at least a pair of optical waveguide paths which are formed on the substrate and arranged in parallel to each other and are joined at their ends; electrodes which are formed along the optical waveguide paths and have the antenna function for detecting electric field signals around the external space; a light supplying means with an optical fiber cable for supplying light to the optical waveguide paths; and an optical detector with a light signal receiver for detecting and processing the light emitted from the optical waveguide paths. This device directly modulates the light which is passing through the waveguide paths with an external space electric field signal carrying information.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: August 25, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takehiro Yamamoto
  • Patent number: 5696607
    Abstract: An image reader is equipped with a light source having a plurality of LEDs arrayed in a row, a light-guiding transparent board, a concave mirror, a condenser lens and a photoelectric converter. The transparent board is disposed between the light source and the concave mirror, and has an illuminating light output surface to be in contact with a document, an illuminating light input surface which is tilted at an angle relative to the output surface and on which light from the light source is to be incident, and first and second side surfaces located in opposition to each other between the illuminating light input and output surfaces. In operation, since the output surface is tightly in contact with the document, light dissipation is prevented. Since the input surface and the output surface are sufficiently separated from each other, rays of light emitted by the individual LEDs are mixed up inside the transparent board.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: December 9, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinji Yamana, Terukazu Ohtsuki, Hitoshi Ikeda, Takehiro Yamamoto
  • Patent number: 5650428
    Abstract: An arylsulfonamide derivative of the formula (I): ##STR1## wherein R.sup.1 is unsubstituted phenyl or naphthyl, or phenyl substituted by 1 to 3 same or different substituents selected from the group consisting of halogen, alkyl, nitro and alkoxy, R.sup.2 is straight, branched, or branched cyclic alkyl with 1 to 15 carbon atoms, phenyl, phenyloxyl, phenyloxy substituted by one or more halogen atoms, cycloalkyl with 5 to 7 carbon atoms, indolyl, alkylthiol with 1 to 4 carbon atoms, hydroxyl, protected hydroxyl, imidazolyl, pyridyloxyl, or --OSO.sub.2 R.sup.4, R.sup.4 is straight or branched alkyl with 1 to 15 carbon atoms, or unsubstituted phenyl or thienyl, or phenyl or thienyl substituted by 1 to 3 same or different substituents of halogen, alkyl, nitro and alkoxy, R.sup.3 is hydrogen or straight or branched alkyl with 1 to 20 carbon atoms, n is an integer of 0 to 10, p is an integer of 0 to 10, X is a group of the formula--(CH.sub.2)m-A-(CH.sub.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: July 22, 1997
    Assignee: NKK Corporation
    Inventors: Masayuki Ohmori, Shin-Ichi Sawamura, Takehiro Yamamoto, Yoshiko Kawada, Shihoko Maeda, Takeshi Yago, Akihiro Nakajima, Masatsugu Mizuguchi, Yasuo Miyoshi
  • Patent number: 5546496
    Abstract: There is provided an inexpensive light emitting display device which has a simple wiring structure and produces a bright screen display. A photo-transistor is connected in series with a light emitting diode. The photo-transistor is arranged so that light emitted from the light emitting diode enters into the photo-transistor. There is provided an optical guide for guiding a data signal light to the photo-transistor and an optical guide for guiding a scanning signal light to the phototransistor. Further, an optical control section has a laser diode array, a lens array, and a deflection mirror. The above-mentioned arrangement obviates the need of an electric wiring for a data signal and a scanning signal, and is able to turn on the photo-transistor with the emission light from the light emitting diode and makes the photo-transistor self-hold its conductive state.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: August 13, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiko Kimoto, Masumi Nakamichi, Takahiro Funakoshi, Yasuhiro Wada, Takehiro Yamamoto, Yoichi Tsuda