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).

  • Publication number: 20040178066
    Abstract: A biosensor according to the present invention comprises a support 1, a conductive layer 2 composed of an electrical conductive material such as noble metal, for example gold, palladium or the like, and carbon, slits 3a and 3b parallel to the side of the support 1, slits 4a and 4b vertical to the side of the support 1, a working electrode 5, a counter electrode 6, a detecting electrode 7, a spacer 8 which covers the working electrode 5, the counter electrode 6 and the detecting electrode 7 on the support 1, a rectangular cutout part 9 forming a specimen supply path, an inlet 9a of the specimen supply path, a reagent layer 12 formed by applying a reagent including an enzyme or the like to the working electrode 5, the counter electrode 6 and the detecting electrode 7, which is exposed from the cutout part 9 of the spacer 8, and a cover 13 which covers the spacer 8, as shown in FIG. 1.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 16, 2004
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Eriko Yamanishi, Yoshinobu Tokuno
  • Publication number: 20040178067
    Abstract: A biosensor according to the present invention comprises a support 1, a conductive layer 2 composed of an electrical conductive material such as noble metal, for example gold, palladium or the like, and carbon, slits 3a and 3b parallel to the side of the support 1, slits 4a and 4b vertical to the side of the support 1, a working electrode 5, a counter electrode 6, a detecting electrode 7, a spacer 8 which covers the working electrode 5, the counter electrode 6 and the detecting electrode 7 on the support 1, a rectangular cutout part 9 forming a specimen supply path, an inlet 9a of the specimen supply path, a reagent layer 12 formed by applying a reagent including an enzyme or the like to the working electrode 5, the counter electrode 6 and the detecting electrode 7, which is exposed from the cutout part 9 of the spacer 8, and a cover 13 which covers the spacer 8, as shown in FIG. 1.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 16, 2004
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Eriko Yamanishi, Yoshinobu Tokuno
  • Patent number: 6773564
    Abstract: The present invention provides a high performance glucose sensor which can demonstrate high stability against preservation and produces only a low blank value. The glucose sensor comprises an electrically insulating base plate, an electrode system formed on the base plate, and a reaction layer which is formed in contact with or in the vicinity of the electrode system and contains at least a glucose dehydrogenase whose coenzyme is pyrrolo-quinoline quinone, the reaction layer further containing an additive such as phthalic acid.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: August 10, 2004
    Assignees: Matsushita Electric Industrial Co., Ltd., Toyobo Co., Ltd.
    Inventors: Keiko Yugawa, Toshihiko Yoshioka, Shiro Nankai, Junko Iwata, Shoji Miyazaki, Hideyuki Baba, Seiji Takeshima
  • Publication number: 20040016642
    Abstract: An electrode layer comprising a working electrode 1 and a counter electrode 2, and a reagent layer 10 are formed on an insulating support 5 and, further, a spacer 7 having a long and narrow cut-out portion on the reagent layer 10 is bonded to a cover 6 having an air hole 9 to form a cavity 12 that sucks blood as a liquid sample by capillary phenomenon, and a portion of side walls of the spacer 7 and the cover 6, which side walls face the cavity 12, is subjected to a treatment for making the portion itself have hydrophilicity.
    Type: Application
    Filed: October 16, 2001
    Publication date: January 29, 2004
    Inventors: Shoji Miyazaki, Haruhiro Tsutsumi, Eriko Yamanishi
  • Patent number: 6640767
    Abstract: The oil pan structure of the present invention comprises an oil pan separator 3, disposed within an oil pan 2, for separating a main chamber provided with a suction port disposed therewithin and a sub chamber provided with no suction port from each other, the oil pan separator 3 having a recess forming the main chamber, the main chamber communicating with the inside of an engine block 1, the recess being formed with communication holes 3c, 3d for communicating the main and sub chambers to each other. The sub chamber is formed so as to surround the main chamber as a whole, whereas the outer face of the bottom part of the oil pan separator 3 and the inner face of the bottom part of the oil pan 2 are not in contact with each other. Therefore, raising the temperature of engine oil within the main chamber earlier can lubricate the engine more effectively.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: November 4, 2003
    Assignees: Toyota Jidosha Kabushiki Kaisha, Pacific Industrial Co., Ltd., Uchiyama Manufacturing Corp., U-Sun Gasket Corporation
    Inventors: Zenichiro Kato, Shoji Miyazaki, Shinzaburo Ichiman, Hiroaki Akita, Toshiteru Ando, Tsutomu Okuda
  • Publication number: 20030175946
    Abstract: In a biosensor that detects introduction of a sample liquid into an analyte feed passage using a detecting electrode, a means of improving accuracy of detection is provided. The biosensor has: an electrode system including measuring electrode (2), counter electrode (3), and detecting electrode (4) on first electrically insulated board (1); analyte feed passage (7) for introducing the sample liquid; and reagent layer (5) used for quantifying a substrate contained in the sample liquid. The means is characterized in that detecting electrode (4) is spaced from measuring electrode (2) by a distance sufficient for the sample liquid to sufficiently cover measuring electrode (2) before the sample liquid reaches detecting electrode (4).
    Type: Application
    Filed: May 6, 2003
    Publication date: September 18, 2003
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki, Eriko Yamanishi
  • Publication number: 20030159945
    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: Application
    Filed: November 21, 2002
    Publication date: August 28, 2003
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Yoshinobu Tokuno, Kazuhiro Matsumoto, Yasuhiko Sawada
  • Publication number: 20030029412
    Abstract: The oil pan structure of the present invention comprises an oil pan separator 3, disposed within an oil pan 2, for separating a main chamber provided with a suction port disposed therewithin and a sub chamber provided with no suction port from each other, the oil pan separator 3 having a recess forming the main chamber, the main chamber communicating with the inside of an engine block 1, the recess being formed with communication holes 3c, 3d for communicating the main and sub chambers to each other. The sub chamber is formed so as to surround the main chamber as a whole, whereas the outer face of the bottom part of the oil pan separator 3 and the inner face of the bottom part of the oil pan 2 are not in contact with each other. Therefore, raising the temperature of engine oil within the main chamber earlier can lubricate the engine more effectively.
    Type: Application
    Filed: July 19, 2002
    Publication date: February 13, 2003
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Zenichiro Kato, Shoji Miyazaki, Shinzaburo Ichiman, Hiroaki Akita, Toshiteru Ando, Tsutomu Okuda
  • Publication number: 20020179441
    Abstract: In a biosensor comprising a pair of conductive lead parts 2 and 3 formed on an insulating substrate 1, a working electrode 4 and a counter electrode 5 formed at the ends of the conductive lead parts 2 and 3, respectively, and a reaction layer 7 which is formed so as to bridge the both electrodes and reacts with a measurement target substance in a specimen liquid, and measuring 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 7, which current value is obtained through the pair of conductive lead parts 2 and 3, the reaction layer 7 which contacts the electrodes 4 and 5 is not provided above at least one of the conductive lead parts 2 and 3 so that the reaction layer 7 and the conductive lead parts 2 and 3 do not contact directly even when pin holes or cracks are generated in the both electrodes.
    Type: Application
    Filed: December 18, 2001
    Publication date: December 5, 2002
    Inventors: Eriko Yamanishi, Shoji Miyazaki, Noriyoshi Terashima
  • Publication number: 20020179440
    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 is produced by a reaction between the substance to be measured and the reaction layer, 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 without artificial preoperation.
    Type: Application
    Filed: December 6, 2001
    Publication date: December 5, 2002
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki
  • Publication number: 20020179442
    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 an insulating support, 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: May 1, 2002
    Publication date: December 5, 2002
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Publication number: 20020139692
    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: October 29, 2001
    Publication date: October 3, 2002
    Inventors: Hiroyuki Tokunaga, Shoji Miyazaki, Hideyuki Baba, Yoichi Inoue, Kazuo Iketaki, Katsumi Hamamoto
  • Patent number: 6309526
    Abstract: A biosensor is fabricated by forming a metal film over the surface of a substrate through evaporation, sputtering or by gluing a metal foil, then splitting the metal film into three regions, and forming a reagent layer on an area of measuring electrode and two counter-electrodes for placing a liquid sample on by providing a cover disposed over the splitted metal film. As neither of the electrodes are formed through conventional printing technology, the electrodes can be formed without dispersion. As a result, a precision biosensor having excellent response characteristics is implemented.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: October 30, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Fujiwara, Yoshinobu Tokuno, Shoji Miyazaki
  • Patent number: 6004441
    Abstract: A biosensor is fabricated by forming a metal film over the surface of a substrate through evaporation, sputtering or by gluing a metal foil, then splitting the metal film into three regions, and forming a reagent layer on an area of measuring electrode and two counter-electrodes for placing a liquid sample on by providing a cover disposed over the splitted metal film. As neither of the electrodes are formed through conventional printing technology, the electrodes can be formed without dispersion. As a result, a precision biosensor having excellent response characteristics is implemented.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: December 21, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaki Fujiwara, Yoshinobu Tokuno, Shoji Miyazaki
  • Patent number: 5512159
    Abstract: A biosensor of the present invention is provided with an insulating base plate, an electrode system mainly consisting of a working electrode and a counter electrode formed on the insulating base plate, and a reaction layer on the electrode system. The counter electrode is partially a circular arc. A manufacturing method of the biosensor of the present invention is comprised of a step to form a base by arranging leads, an electrode system, and an insulating layer on an insulating base plate, and a step to form a reaction layer mainly composed of an enzyme on the electrode system. Since the counter electrode is partially in the shape of a circular arc, the reaction layer is easily formed and prevented from delaminating, whereby the measuring accuracy, preservative properties and reliability of the biosensor are improved. The present invention enables highly efficient biosensors to be mass produced at low cost.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: April 30, 1996
    Assignee: Matsushita Electric Industrial Co. Ltd.
    Inventors: Toshihiko Yoshioka, Mariko Kawaguri, Shiro Nankai, Haruhiro Tsutsumi, Hideyuki Baba, Yoshinobu Tokuno, Shoji Miyazaki
  • Patent number: 4517110
    Abstract: A rust preventive agent comprising a salt of hydroxycarboxylic acid having a cyclohexane ring. This preventive agent has the advantages of low toxicity, safely, and low foaming, and additionally exhibits excellent rust preventive effect on various metals.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: May 14, 1985
    Assignee: Agency of Industrial Science and Technology
    Inventors: Hiroshi Suzuki, Yasuo Gama, Shoji Miyazaki
  • Patent number: 4387140
    Abstract: The present invention relates to a slide member which has excellent wear, seizing, and scuffing resistances, and excellent adherence property, and which can be used even under high-temperature conditions, and which is suited for being applied to slide surfaces of piston rings, cylinder liners and slide surfaces of the air compressors for internal combustion engines. For this purpose, according to the present invention, the slide surface has a layer which is formed by plasma spray-coating of a powdery mixture consisting of 5 to 80% by weight of an Fe/Ni alloy and 95 to 20% by weight of an Fe/high-Cr alloy.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: June 7, 1983
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Katsumi Kondo, Yoshio Fuwa, Shoji Miyazaki
  • Patent number: D438310
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: February 27, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eriko Yamanishi, Shoji Miyazaki, Masaki Fujiwara
  • Patent number: D438311
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: February 27, 2001
    Assignee: Matsushita Electric Industrial Co.,Ltd.
    Inventors: Eriko Yamanishi, Shoji Miyazaki, Masaki Fujiwara
  • Patent number: D439987
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 3, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eriko Yamanishi, Shoji Miyazaki, Masaki Fujiwara