Patents by Inventor Kazuhiro Yamakawa

Kazuhiro Yamakawa 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: 20100101336
    Abstract: A magnetostrictive torque sensor that detects a torque of a rotating shaft and/or a stationary shaft by using a magnetostriction inverse effect that occurs on a shaft surface, the magnetostrictive torque sensor includes a first detection coil, a second detection coil, a first oscillation circuit, a second oscillation circuit, a first direction magnetic permeability detector, a second direction magnetic permeability detector, and a torque detector.
    Type: Application
    Filed: December 19, 2007
    Publication date: April 29, 2010
    Applicant: AZUMA SYSTEMS CO., LTD.
    Inventors: Kazuhiro Yamakawa, Tetsuo Kanda
  • Publication number: 20090051355
    Abstract: A proximity sensor for detecting proximity of a metal, wherein a driving signal is output to a resonant circuit that includes a capacitor connected to a detecting coil, and the proximity of the metal is detected based on a phase shift of freely oscillating waves that are attenuatedly output from the resonant circuit after an output of the driving signal is stopped, the proximity sensor includes a controller that outputs the driving signal to the resonant circuit; and measures a phase shift of oscillating waves that is involved in the proximity of the metal based on the freely oscillating waves that are attenuatedly output from the resonant circuit after the output of the driving signal is stopped.
    Type: Application
    Filed: August 31, 2006
    Publication date: February 26, 2009
    Applicant: AZUMA SYSTEMS CO., LTD
    Inventor: Kazuhiro Yamakawa
  • Publication number: 20050150741
    Abstract: In a coin configuration detection method and a coin identification sensor that magnetically detect the coin configuration, coin configuration detection is enabled to be accurately performed. Moreover, in a coin identification apparatus, the coin identification accuracy is improved. In a coin configuration detection method (coin identification sensor 1) that magnetically detects the configuration of a coin 2 to identify the kind and/or the authenticity of the coin 2, a magnetic flux change in the vicinity of the surface of the coin 2 is detected by a detection coil 7 in which a coil central line is along the surface of the coin 2 and a coil peripheral surface is locally opposed to the surface of the coin 2 while an AC magnetic field along the surface of the coin 2 is generated in the interior of the coin 2 and/or in the surface space of the coin 2. Moreover, the coin identification apparatus identifies the coin 2 based on the detection signal of the coin identification sensor 1.
    Type: Application
    Filed: April 22, 2003
    Publication date: July 14, 2005
    Applicant: AZUMA SYSTEMS CO. LTD
    Inventors: Kazuhiro Yamakawa, Kazuaki Tabata
  • Publication number: 20040180335
    Abstract: The present invention provides isolated nucleic acids encoding human EHOC-1 protein and isolated receptor proteins encoded thereby. Further provided are vectors containing invention nucleic acids, probes that hybridize thereto, host cells transformed therewith, antisense oligonucleotides thereto and compositions containing, antibodies that specifically bind to invention polypeptides and compositions containing, as well as transgenic non-human mammals that express the invention protein.
    Type: Application
    Filed: December 26, 2000
    Publication date: September 16, 2004
    Inventors: Julie R. Korenberg, Kazuhiro Yamakawa
  • Patent number: 6295731
    Abstract: In a valve head of a poppet valve used in an internal combustion engine, a lobe is formed. The lobe has a vertical section of an isosceles triangle which has a vertex in the middle. By pressing the lobe in a bore of a die, the lobe is plastically deformed, so that a valve face is formed at a position which contacts a valve seat. Suitable airtightness is obtained between the valve face and the valve seat.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: October 2, 2001
    Assignee: Fuji Oozx Inc.
    Inventors: Kazuhiro Yamakawa, Satoshi Fukuoka
  • Patent number: 6166180
    Abstract: The present invention provides isolated nucleic acids encoding human EHOC-1 protein and isolated receptor proteins encoded thereby. Further provided are vectors containing invention nucleic acids, probes that hybridize thereto, host cells transformed therewith, antisense oligonucleotides thereto and compositions containing, antibodies that specifically bind to invention polypeptides and compositions containing, as well as transgenic non-human mammals that express the invention protein.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: December 26, 2000
    Assignee: Cedar-Sinai Medical Center
    Inventors: Julie R. Korenberg, Kazuhiro Yamakawa
  • Patent number: 5773268
    Abstract: The present invention provides isolated nucleic acids encoding human EHOC-1 protein and isolated receptor proteins encoded thereby. Further provided are vectors containing invention nucleic acids, probes that hybridize thereto, host cells transformed therewith, antisense oligonucleotides thereto and compositions containing, antibodies that specifically bind to invention polypeptides and compositions containing, as well as transgenic non-human mammals that express the invention protein.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: June 30, 1998
    Assignee: Cedars-Sinai Medical Center
    Inventors: Julie R. Korenberg, Kazuhiro Yamakawa