Patents by Inventor Yoshihisa Takahashi

Yoshihisa Takahashi 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: 20040173365
    Abstract: A phase separation jig (100) for a superconducting cable includes: a cable holder (10) maintaining each core (80) of a multi-core superconducting cable (2) in a predetermined tolerable bending manner; and a coupler (20, 30) holding the cable holder (10) for each core (80) at a predetermined spacing with each other. Each core (80) is spaced apart from each other and maintained in a tolerable bending manner by the holder (10). Accordingly, a phase separation structure can be obtained which can regulate deformation of the cable and prevent abnormal deformation even for a superconducting cable.
    Type: Application
    Filed: December 18, 2003
    Publication date: September 9, 2004
    Inventors: Masayuki Hirose, Hiroyasu Yumura, Takeshi Kato, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Publication number: 20040165649
    Abstract: A communication device, able to establish synchronization of frequency and able to continuously track a carrier even if an oscillation frequency of an oscillator changes, wherein the device changes the oscillation frequency of a reference frequency oscillator according to established protocols when the base station of the other party in communication changes by generating a frequency change signal for reporting that the base station has changed and the frequency must be changed and outputting it to a control unit of a GPS baseband unit and wherein, when not receiving a frequency change signal, the control unit makes a tracking unit operate divided into three groups of loop units of a group of loop units for the currently synchronized frequency and groups of loop units for the frequency f±&Dgr;fs of the ± change and, when receiving a frequency change signal, makes the tracking unit operate divided into two groups of loop units for the frequency f±&Dgr;fs of the ± change excluding th
    Type: Application
    Filed: February 24, 2004
    Publication date: August 26, 2004
    Inventors: Yoshihisa Takahashi, Takayasu Muto
  • Patent number: 6718618
    Abstract: A superconducting cable is manufactured by providing spacers 12 in a plurality of cores 2 at the time of stranding of the cores 2, and removing the spacers 12 before the stranded cores 2 are housed in a thermally insulated pipe and housing the cores into the thermally insulated pipe while the strands are held in a slacked state. By means of temporal interposition of the spacers, there is easily manufactured three cores having sufficient slack to manage thermal contraction which occurs when the cores are cooled in the thermally insulated pipe.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: April 13, 2004
    Assignees: Sumitomo Electric Industries, Ltd., Tokyo Electric Power Company
    Inventors: Masayuki Hirose, Takato Masuda, Takeshi Kato, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Publication number: 20030179669
    Abstract: An information recording medium includes a data area for recording user data, and a defect management area for recording a defect list for managing N number of defect areas existing in the data area, where N is an integer satisfying N≧0. The defect list includes a header located at a fixed position in the defect list, N number of defect entries respectively including position information on positions of the N number of defect areas, and an anchor. The header, the N number of defect entries, and the anchor are located in this order. The header includes a defect list identifier for identifying the defect list, first update times information, and a defect entry number representing the number of the defect entries. The anchor includes an anchor identifier for identifying the anchor, and second update times information.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 25, 2003
    Inventors: Yoshihisa Takahashi, Motoshi Ito, Hiroshi Ueda
  • Publication number: 20030154727
    Abstract: A terminal structure of cryogenic equipment for leading a terminal of cryogenic equipment 100 from a very low temperature portion to a room temperature portion through a bushing, having a feature in that a connecting/heat-insulating portion 300 adiabatically connected with the aforementioned very low temperature portion 200 and the aforementioned room temperature portion 400 is provided along the outer circumference of the aforementioned bushing 30 between the aforementioned very low temperature portion 200 and the aforementioned room temperature portion 400.
    Type: Application
    Filed: April 3, 2003
    Publication date: August 21, 2003
    Inventors: Yuuichi Ashibe, Masayuki Hirose, Kouhei Furukawa, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Patent number: 6552260
    Abstract: A superconducting cable includes a core material, conductor layers formed by means of helically winding superconducting wires around the core material, electrically insulating layers, and magnetic shielding layers formed by means of helically winding superconducting wires around each of the electrically shielding layers. The superconducting wire is wound at the shortest pitch on the outermost conductor layer and is wound at the longest pitch on the outermost magnetic shielding layer.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: April 22, 2003
    Assignees: Sumitomo Electric Industries, Ltd., Tokyo Electric Power Company
    Inventors: Jun Fujikami, Toru Okazaki, Takato Masuda, Takeshi Kato, Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Publication number: 20020148101
    Abstract: A superconducting cable is manufactured by providing spacers 12 in a plurality of cores 2 at the time of stranding of the cores 2, and removing the spacers 12 before the stranded cores 2 are housed in a thermally insulated pipe and housing the cores into the thermally insulated pipe while the strands are held in a slacked state. By means of temporal interposition of the spacers, there is easily manufactured three cores having sufficient slack to manage thermal contraction which occurs when the cores are cooled in the thermally insulated pipe.
    Type: Application
    Filed: January 15, 2002
    Publication date: October 17, 2002
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Masayuki Hirose, Takato Masuda, Takeshi Kato, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Publication number: 20010054509
    Abstract: A superconducting cable includes a core material, conductor layers formed by means of helically winding superconducting wires around the core material, electrically insulating layers, and magnetic shielding layers formed by means of helically winding superconducting wires around each of the electrically shielding layers. The superconducting wire is wound at the shortest pitch on the outermost conductor layer and is wound at the longest pitch on the outermost magnetic shielding layer.
    Type: Application
    Filed: January 12, 2001
    Publication date: December 27, 2001
    Inventors: Jun Fujikami, Toru Okazaki, Takato Masuda, Takeshi Kato, Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 5390218
    Abstract: A process of preparing a fuel pellet for a nuclear reactor, comprising washing the gel particle using an organic solvent miscible with water to substitute the organic solvent for the water, removing the organic solvent, moistening again the dry gel particle, followed by press molding and sintering.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: February 14, 1995
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Shigeru Yamagishi, Yoshihisa Takahashi
  • Patent number: 4668884
    Abstract: A brushless motor (10) comprises a stator yoke plate (16) made of a magnetic material, to which both main surfaces the first and the second flexible printed circuit boards (20) (22) formed integrally including a connecting part (24) are stuck respectively. On the first flexible printed circuit board (20), a plurality of driving coils (30) are arranged annularly and a conductor pattern for a speed detecting coil is formed inside the driving coils (30). On the integrated stator yoke plate (16) and the first and second flexible printed circuit boards (20) (22), a penetrated hole (18) for passing through a rotor shaft (54) is formed generally in the center. A tongue (36) is formed generally in protrusion inwardly from the periphery defining the penetrated hole (18) on which a connecting conductor pattern connected to the speed detecting coil is formed.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: May 26, 1987
    Assignees: Sanyo Electric Co, Kumagaya Seimitsu Co., Ltd.
    Inventors: Nobuyoshi Amao, Yoshihisa Takahashi, Hitoshi Yokomizo
  • Patent number: 4615834
    Abstract: A process and an apparatus are, herein, disclosed for producing microspheres of fissile and/or fertile materials with a high degree of sphericity from a feed solution starter containing at least one metal salt selected from among thorium, uranium and plutonium by using as a gelling medium an organic solvent that has a higher density and a greater interfacial tension with water than the feed solution and which is capable of dissolving ammonia.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: October 7, 1986
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Shigeru Yamagishi, Yoshihisa Takahashi, Koreyuki Shiba