Patents by Inventor Shoji Miyazaki

Shoji Miyazaki 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: 7504020
    Abstract: According to the standard solution and the determination method of the present invention, in a case where a voltage is applied by a drive voltage of a measurement apparatus to an electrode portion of a biosensor comprising an electrode portion including a counter electrode and a measuring electrode formed on an insulating substrate, and a reagent layer which reacts with a sample solution supplied to the electrode portion, and a current value which flows at the application is measured, thereby determining a substrate contained in the sample solution, a reducing substance is contained in the standard solution used for controlling a precision of measurement of the measurement apparatus. Therefore, when the standard solution is measured, a large change occurs in a current waveform between time t0 and t1 shown in FIG. 6 due to the reducing substance, thereby discriminating whether the analyte liquid being measured is the standard solution or the sample solution and easily identifying the kind of analyte liquid.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: March 17, 2009
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Tokunaga, Motonori Uchiyama, Eriko Yamanishi, Shoji Miyazaki
  • Publication number: 20090020189
    Abstract: The steel wire material for a spring of the invention contains; C: 0.37-0.54%, Si: 1.7-2.30%, Mn: 0.1-1.30%, Cr: 0.15-1.1%, Cu: 0.15-0.6%, Ti: 0.010-0.1%, Al: 0.003-0.05%, and the balance including iron with inevitable impurities, wherein ferrite decarburized layer depth is 0.01 mm or less, whole decarburized layer depth is 0.20 mm or less, and fracture reduction of area is 25% or more. It alternately may contain; C: 0.38-0.47%, Si: 1.9-2.5%, Mn: 0.6-1.3%, Ti: 0.05-0.15%, Al: 0.003-0.1%, and the balance including iron with inevitable impurities, wherein ferrite decarburized layer depth is 0.01 mm or less, Ceq1 in the equation (1) below is 0.580 or more, Ceq2 in the equation (2) below is 0.49 or less, and Ceq3 in the equation (3) below is 0.570 or less. Ceq1=[C]+0.11[Si]?0.07[Mn]?0.05[Ni]+0.02[Cr]??(1) Ceq2=[C]+0.30[Cr]?0.15[Ni]?0.70[Cu]??(2) Ceq3=[C]?0.04[Si]+0.24[Mn]+0.10[Ni]+0.20[Cr]?0.89[Ti]?1.92[Nb]??(3) (In the above equations, [ ] shows the content (mass %) of each element in steel.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 22, 2009
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Nao YOSHIHARA, Fujio Koizumi, Hirokazu Inoue, Katsuya Takaoka, Shoji Miyazaki, Sayaka Nagamatsu
  • Publication number: 20090007998
    Abstract: A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460√óC00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).
    Type: Application
    Filed: November 7, 2006
    Publication date: January 8, 2009
    Applicant: KAB KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takuya Kochi, Shogo Murakami, Shoji Miyazaki, Ken Ishida, Masao Toyama, Fujio Koizumi
  • Publication number: 20080110754
    Abstract: A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.
    Type: Application
    Filed: May 3, 2007
    Publication date: May 15, 2008
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Yoshinobu Tokuno, Kazuhiro Matsumoto, Yasuhiko Sawada
  • Publication number: 20070289350
    Abstract: A round steel rod having a carbon content between 0.30 and 0.60% is processed by a cold working process to form a flat wire for forming a ring gear. The cold working process forms a semifinished flat wire by at least one cold rolling or cold roller drawing step and at least one two-way or four-way rolling step. The semifinished flat wire is processed by die drawing using a drawing die to obtain a finished flat wire in a last stage of the cold working process. The cold working process reduces the round steel rod at a total area reduction of 65% or below.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 20, 2007
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hitoshi Kushida, Osamu Ishigami, Norio Okochi, Shoji Miyazaki
  • Patent number: 7232510
    Abstract: A biosensor, a measuring instrument for biosensor, and a method of quantifying a substrate contained in specimen liquid to reduce a measurement error by the biosensor; a biosensor, comprising at least a pair of electrodes formed on an insulation substrate; a measuring instrument, comprising a supporting part for detachably supporting the biosensor, a plurality of connection terminals electrically connected to the electrodes, and a drive power supply for applying a voltage to the electrodes through the connection terminals; wherein the biosensor is inserted into the measuring instrument, either one of the electrodes of the biosensor is connected to first and second connection terminals fined to the measuring instrument only when the biosensor is inserted into the support part of the measuring instrument in a specified direction and has an electrode structure to allow the first connection terminal to conduct with the second connection terminal when a voltage is applied by the drive power supply.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: June 19, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Yoshinobu Tokuno, Kazuhiro Matsumoto, Yasuhiko Sawada
  • Patent number: 7122111
    Abstract: A glucose sensor system comprising the steps of using as a sample discriminating parameter a ratio (I/?I) of a measured current value I to the time-differential value of the current value ?I, defining a discrimination function that discriminates whether a sample is blood or control fluid and uses the discriminating parameter as an independent variable, quantitating as a discriminating index a numeric value obtained by substituting a discriminating parameter value into this discrimination function, and automatically discriminating, based on this index, whether the sample is blood or a control fluid, whereby a kind of the sample can be automatically quantitated by measuring electric current when a sensor system is used for quantitating the concentration of an analysis object in the sample.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: October 17, 2006
    Assignees: Matsushita Electric Industrial Co., Ltd., Arkray, Inc.
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki, Hideyuki Baba, Yoichi Inoue, Kazuo Iketaki, Katsumi Hamamoto
  • Publication number: 20060175207
    Abstract: A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.
    Type: Application
    Filed: March 16, 2006
    Publication date: August 10, 2006
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Yoshinobu Tokuno, Kazuhiro Matsumoto, Yasuhiko Sawada
  • Publication number: 20060175206
    Abstract: A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.
    Type: Application
    Filed: March 17, 2006
    Publication date: August 10, 2006
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Yoshinobu Tokuno, Kazuhiro Matsumoto, Yasuhiko Sawada
  • Patent number: 7005048
    Abstract: The present invention provides a high-performance glucose sensor having excellent storage stability and an improved response characteristic. This sensor comprises: an electrically insulating base plate; an electrode system including at least a working electrode and a counter electrode formed on the base plate; and a reaction layer containing at least pyrrolo-quinoline quinone dependent glucose dehydrogenase, formed in contact with or in the vicinity of the electrode system, and the reaction layer contains at least one kind of additive selected from the group consisting of gluconic acid and salts thereof.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: February 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Motokazu Watanabe, Keiko Yugawa, Toshihiko Yoshioka, Shiro Nankai, Junko Nakayama, Shoji Miyazaki, Hideyuki Baba
  • Publication number: 20050247562
    Abstract: According to the standard solution and the determination method of the present invention, in a case where a voltage is applied by a drive voltage of a measurement apparatus to an electrode portion of a biosensor comprising an electrode portion including a counter electrode and a measuring electrode formed on an insulating substrate, and a reagent layer which reacts with a sample solution supplied to the electrode portion, and a current value which flows at the application is measured, thereby determining a substrate contained in the sample solution, a reducing substance is contained in the standard solution used for controlling a precision of measurement of the measurement apparatus. Therefore, when the standard solution is measured, a large change occurs in a current waveform between time t0 and t1 shown in FIG. 6 due to the reducing substance, thereby discriminating whether the analyte liquid being measured is the standard solution or the sample solution and easily identifying the kind of analyte liquid.
    Type: Application
    Filed: October 31, 2003
    Publication date: November 10, 2005
    Inventors: Hiroyuki Tokunaga, Motonori Uchiyama, Eriko Yamanishi, Shoji Miyazaki
  • Publication number: 20050194251
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Application
    Filed: April 14, 2005
    Publication date: September 8, 2005
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Patent number: 6911131
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: June 28, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Patent number: 6881322
    Abstract: A reaction layer 12 which reacts with a substance to be measured in a sample solution is provided on a working electrode 1, a counter electrode 2, and a third electrode 3 which are provided on an insulating substrate 7 so as to bridge the respective electrodes, the content of the substance to be measured is measured from a current value which reaction is obtained between the working electrode 1 and the counter electrode 2, and the types of sample solution is judged by a difference between oxidation current values or between oxidation current waveforms, which are obtained between the third electrode 3 and the counter electrode 2 or between the third electrode 3 and the working electrode 1, thereby automatically judging the types of sample solution.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: April 19, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki
  • Patent number: 6875327
    Abstract: The invention provides a biosensor comprising a support; a conductive layer composed of a electrical conductive material such as a noble metal, for example gold or palladium, and carbon; slits parallel to and perpendicular to the side of the support; working, counter, and detecting electrodes; a spacer which covers the working, counter, and detecting electrodes on the support; a rectangular cutout in the spacer forming a specimen supply path; an inlet to the specimen supply path; a reagent layer formed by applying a reagent containing an enzyme to the working, counter, and detecting electrodes, which are exposed through the cutout in the spacer; and a cover over the spacer. The biosensor can be formed by a simple method, and provides a uniform reagent layer on the electrodes regardless of the reagent composition.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: April 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Eriko Yamanishi, Yoshinobu Tokuno
  • Patent number: 6860978
    Abstract: A biosensor includes a pair of conductive lead parts formed on an insulating substrate, a working electrode and a counter electrode formed at the ends of the conductive lead parts, respectively, and a reaction layer formed so as to bridge the electrodes and react with a measurement target substance in a specimen liquid. The biosensor measures the content of the measurement target substance from an electric current value based on the reaction between the measurement target substance and the reaction layer, which current value is obtained through the pair of conductive lead parts. The reaction layer is not provided above at least one of the conductive lead parts so that the reaction layer and the conductive lead parts do not contact directly even when pin holes or cracks are generated in the electrodes.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: March 1, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eriko Yamanishi, Shoji Miyazaki, Noriyoshi Terashima
  • Publication number: 20050036906
    Abstract: A biosensor for analyzing specific components in an introduced liquid sample by reaction of the liquid sample with a reagent comprises a cavity into which the liquid sample is introduced, an air hole communicating from the cavity to outside, and a water repellent part having a water repellency at 43 mN/m or less in surface free energy and provided to at least a portion around the outlet of the air hole. By the water repellent part around the air hole, the liquid sample can be prevented from flowing out through the air hole, thereby achieving a high-accuracy measurement.
    Type: Application
    Filed: January 7, 2004
    Publication date: February 17, 2005
    Applicants: Toray Industries, Inc., Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuji Nakahara, Kiyohiko Itoh, Shoji Miyazaki, Hiroyuki Tokunaga, Eriko Yamanishi
  • Patent number: 6830669
    Abstract: A biosensor having an electrode layer, which includes a working electrode and a counter electrode, and a reagent layer 10 are formed on an insulating support. Further, a spacer having a long and narrow cut-out portion on the reagent layer is bonded to a cover having an air hole to form a cavity that sucks blood as a liquid sample by capillary phenomenon, and a portion of side walls of the spacer and the cover, which side walls face the cavity, is subjected to a treatment for making the portion itself have hydrophilicity. Accordingly, when blood is sucked into the cavity by capillary phenomenon, the suction is promoted, and the performance of a sensor of the biosensor is improved. Further, the process of manufacturing the sensor is simplified, thereby resulting in increased productivity.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: December 14, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shoji Miyazaki, Haruhiro Tsutsumi, Eriko Yamanishi
  • Patent number: 6824670
    Abstract: A glucose sensor system comprising the steps of using as a sample discriminating parameter a ratio (I/&Dgr;I) of a measured current value I to the time-differential value of the current value &Dgr;I, defining a discrimination function that discriminates whether a sample is blood or control fluid and uses the discriminating parameter as an independent variable, quantitating as a discriminating index a numeric value obtained by substituting a discriminating parameter value into this discrimination function, and automatically discriminating, based on this index, whether the sample is blood or a control fluid, whereby a kind of the sample can be automatically quantitated by measuring electric current when a sensor system is used for quantitating the concentration of an analysis object in the sample.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: November 30, 2004
    Assignees: Matsushita Electric Industrial Co. Ltd., Arkray, Inc.
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki, Hideyuki Baba, Yoichi Inoue, Kazuo Iketaki, Katsumi Hamamoto
  • Publication number: 20040235178
    Abstract: A glucose sensor system comprising the steps of using as a sample discriminating parameter a ratio (I/&Dgr;I) of a measured current value I to the time-differential value of the current value &Dgr;I, defining a discrimination function that discriminates whether a sample is blood or control fluid and uses the discriminating parameter as an independent variable, quantitating as a discriminating index a numeric value obtained by substituting a discriminating parameter value into this discrimination function, and automatically discriminating, based on this index, whether the sample is blood or a control fluid, whereby a kind of the sample can be automatically quantitated by measuring electric current when a sensor system is used for quantitating the concentration of an analysis object in the sample.
    Type: Application
    Filed: June 29, 2004
    Publication date: November 25, 2004
    Applicants: Matsushita Electric Industrial Co., Ltd., Arkray, Inc.
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki, Hideyuki Baba, Yoichi Inoue, Kazuo Iketaki, Katsumi Hamamoto