Patents by Inventor Kazuo Fukuda
Kazuo Fukuda 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).
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Patent number: 11154657Abstract: A method of performing an intravenous drip injection includes a first step, a second step, a third step and a fourth step. A first step includes starting dosing an infusion solution containing a predetermined component by the intravenous drip injection to a dosing recipient. A second step includes extracting a body fluid from the dosing recipient being dosed with the infusion solution. A third step includes measuring a concentration of the predetermined component in the extracted body fluid. A fourth step includes varying the concentration of the predetermined component in the infusion solution, corresponding to the concentration of the predetermined component in the body fluid.Type: GrantFiled: December 14, 2018Date of Patent: October 26, 2021Assignee: ARKRAY, Inc.Inventors: Kazuo Fukuda, Tsuyoshi Takasu
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Patent number: 10816558Abstract: An ascorbic acid responsive electrode comprising an electrode, and a detection layer comprising a non-catalytic electron acceptor that receives an electron from ascorbic acid, an amino acid, and a saccharide and/or a soluble protein; wherein in the detection layer the electron acceptor is reduced by the ascorbic acid, and the reduced electron acceptor is oxidized at the electrode.Type: GrantFiled: October 23, 2018Date of Patent: October 27, 2020Assignee: ARKRAY, Inc.Inventor: Kazuo Fukuda
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Patent number: 10619178Abstract: The disclosure relates to a biosensor including electrodes, a hydrophilic region or layer, and a reagent layer that contains an enzyme and a mediator, and methods of producing thereof.Type: GrantFiled: August 29, 2017Date of Patent: April 14, 2020Assignee: ARKRAY, Inc.Inventor: Kazuo Fukuda
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Patent number: 10591459Abstract: Provided are a measuring apparatus and method for obtaining a measurement value from a response to a signal applied to a sample, wherein the measuring apparatus includes a first measuring unit that measures a first electric response to a first signal that is input to a first pair of electrodes that can come into contact with a sample, a second measuring unit that measures a second electric response to a second signal that is input to a second pair of electrodes that can come into contact with the sample, the second signal changing its value from a first level to a second level and thereafter maintaining the second level for a certain period of time, as a peak value of a response signal with respect to the change in the second signal, and a control unit that corrects a value indicating the amount of a measuring target component of the sample, the value being obtained from the first electric response, based on the peak value of the response signal.Type: GrantFiled: April 29, 2014Date of Patent: March 17, 2020Assignee: ARKRAY, Inc.Inventors: Kazuo Fukuda, Hirokazu Matsuda, Akiko Okami
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Publication number: 20190184100Abstract: A method of performing an intravenous drip injection includes a first step, a second step, a third step and a fourth step. A first step includes starting dosing an infusion solution containing a predetermined component by the intravenous drip injection to a dosing recipient. A second step includes extracting a body fluid from the dosing recipient being dosed with the infusion solution. A third step includes measuring a concentration of the predetermined component in the extracted body fluid. A fourth step includes varying the concentration of the predetermined component in the infusion solution, corresponding to the concentration of the predetermined component in the body fluid.Type: ApplicationFiled: December 14, 2018Publication date: June 20, 2019Applicant: ARKRAY, Inc.Inventors: Kazuo Fukuda, Tsuyoshi Takasu
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Publication number: 20190120861Abstract: An ascorbic acid responsive electrode comprising an electrode, and a detection layer comprising a non-catalytic electron acceptor that receives an electron from ascorbic acid, an amino acid, and a saccharide and/or a soluble protein; wherein in the detection layer the electron acceptor is reduced by the ascorbic acid, and the reduced electron acceptor is oxidized at the electrode.Type: ApplicationFiled: October 23, 2018Publication date: April 25, 2019Applicant: ARKRAY, Inc.Inventor: Kazuo Fukuda
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Patent number: 10234414Abstract: A measurement apparatus to measure a physical quantity related to a measurement target by use of a sensor, comprising: an apparatus enclosure; a control unit to be electrically connected to the sensor; and a moving member including a sensor holding unit to hold the sensor, the moving member being movable to protrude the sensor holding unit outwardly of the apparatus enclosure and further including a conductive member to electrically connect the sensor to the control unit.Type: GrantFiled: May 12, 2015Date of Patent: March 19, 2019Assignee: ARKRAY, Inc.Inventors: Yuji Kurata, Kazuo Fukuda, Yoshiharu Sato, Gai Go
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Publication number: 20180355395Abstract: Provided is a biosensor for measuring a target substance in a sample, wherein the biosensor comprises an electrode pair comprising a working electrode and a counter electrode, and reagents placed at least on the working electrode, wherein the reagents comprise a first oxidoreductase which oxidizes/reduces the target substance, at least one mediator which transfers electrons generated from an oxidation reduction reaction by the first oxidoreductase to the electrode, and a second oxidoreductase which oxidizes/reduces an interfering substance, and wherein the oxidation-reduction potential of the mediator is higher than the oxidation-reduction potential of the first oxidoreductase and lower than the oxidation-reduction potential of the second oxidoreductase.Type: ApplicationFiled: June 11, 2018Publication date: December 13, 2018Applicant: ARKRAY, Inc.Inventor: Kazuo Fukuda
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Publication number: 20180057851Abstract: The disclosure relates to a biosensor including electrodes, a hydrophilic region or layer, and a reagent layer that contains an enzyme and a mediator, and methods of producing thereof.Type: ApplicationFiled: August 29, 2017Publication date: March 1, 2018Applicant: ARKRAY, Inc.Inventor: Kazuo Fukuda
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Patent number: 9562909Abstract: A sensor includes a substrate that includes an upper substrate and a lower substrate, and an electrode that is provided on the lower substrate, and the upper substrate, the lower substrate, and the electrode are formed by an optically transparent member.Type: GrantFiled: April 10, 2015Date of Patent: February 7, 2017Assignee: ARKRAY, Inc.Inventors: Kazuo Fukuda, Hisashi Kaneda
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Publication number: 20160018353Abstract: A measurement apparatus to measure a physical quantity related to a measurement target by use of a sensor, comprising: an apparatus enclosure; a control unit to be electrically connected to the sensor; and a moving member including a sensor holding unit to hold the sensor, the moving member being movable to protrude the sensor holding unit outwardly of the apparatus enclosure and further including a conductive member to electrically connect the sensor to the control unit.Type: ApplicationFiled: May 12, 2015Publication date: January 21, 2016Applicant: ARKRAY, INC.Inventors: Yuji KURATA, Kazuo FUKUDA, Yoshiharu SATO, Gai GO
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Publication number: 20150293112Abstract: A sensor includes a substrate that includes an upper substrate and a lower substrate, and an electrode that is provided on the lower substrate, and the upper substrate, the lower substrate, and the electrode are formed by an optically transparent member.Type: ApplicationFiled: April 10, 2015Publication date: October 15, 2015Applicant: ARKRAY, INC.Inventors: Kazuo Fukuda, Hisashi Kaneda
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Publication number: 20150129434Abstract: An apparatus and a method that can detect a defective analytical device due to the scattering of a reagent are provided. In particular, a blood glucose level meter (measuring apparatus) 1 is configured to measure a target component of a biological sample using a reagent. The apparatus includes a second measuring unit (measuring unit) 31b configured to measure an electrical response to a detection signal applied to a pair of hematocrit electrodes (test electrode pair), and a control unit 33 configured to determine the presence or absence of the reagent on the pair of hematocrit electrodes based on the measured electrical response.Type: ApplicationFiled: November 4, 2014Publication date: May 14, 2015Applicant: ARKRAY, INC.Inventors: Kazuo Fukuda, Yoshiharu Sato, Akiko Okami
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Publication number: 20140326037Abstract: Provided are a measuring apparatus and method for obtaining a measurement value from a response to a signal applied to a sample, wherein the measuring apparatus includes a first measuring unit that measures a first electric response to a first signal that is input to a first pair of electrodes that can come into contact with a sample, a second measuring unit that measures a second electric response to a second signal that is input to a second pair of electrodes that can come into contact with the sample, the second signal changing its value from a first level to a second level and thereafter maintaining the second level for a certain period of time, as a peak value of a response signal with respect to the change in the second signal, and a control unit that corrects a value indicating the amount of a measuring target component of the sample, the value being obtained from the first electric response, based on the peak value of the response signal.Type: ApplicationFiled: April 29, 2014Publication date: November 6, 2014Applicant: ARKRAY, Inc.Inventors: Kazuo Fukuda, Hirokazu Matsuda, Akiko Okami
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Publication number: 20130261418Abstract: A measuring apparatus (10) for measuring the condition of a measurement subject includes: a recording unit (11) configured to record a plurality of behaviors that can be set in the measuring apparatus (10), and pieces of identification information that are associated with the plurality of behaviors; an output unit (13) configured to output the behaviors; and a setting unit (12) configured to specify a piece of identification information that is correlated with a measurement result in accordance with external input, and to set the specified piece of identification information and a behavior associated therewith, as identification information and a behavior that are to be used.Type: ApplicationFiled: March 26, 2013Publication date: October 3, 2013Applicant: ARKRAY, Inc.Inventors: Kazuo Fukuda, Hiroyuki Nakanishi, Hitoshi Hata
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Publication number: 20090162905Abstract: A partially purified product of a hyaluronic acid salt obtained from a culture of a microorganism capable of producing hyaluronic acid, preferably a microorganism belonging to the genus Streptcoccus, is brought into contact with a solution containing a salt and a hydrophilic organic solvent, thereby transferring to a liquid phase, impurities contained in said partially purified product such as proteins, nucleic acids, colorants, endotoxins and the like, and then isolating the hyaluronic acid salt as a precipitate.Type: ApplicationFiled: June 7, 2007Publication date: June 25, 2009Inventors: Hideki Murata, Kazuo Fukuda
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Patent number: 7327091Abstract: A light-emitting element driving apparatus includes a constant-current circuit and a control circuit. The constant-current circuit includes a plurality of constant-current sources that are connected in parallel with each other and are respectively connected in series to a light-emitting element to supply current to the light-emitting element. The constant-current sources arrange 1st to Nth (N is an integer not smaller than 2) constant-current blocks each including 1st to Mth (M is an integer not smaller than 2) constant-current sources. A current ratio among the 1st to Mth constant-current sources is substantially identical in all of the constant-current blocks.Type: GrantFiled: December 28, 2005Date of Patent: February 5, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuo Fukuda, Tsutomu Fujino
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Publication number: 20080016443Abstract: A navigation device includes: a display monitor equipped with a touch panel with a display screen assuming a substantially rectangular shape; a display control unit that displays specific simple information over part of the display screen along a side of the display screen or in a corner of the display screen; and a touch position detection unit that detects a touch in a display area where the simple information is provided and then detects that a touch position of the touch has moved inward from an edge of the display screen. As the touch position detection unit detects that the touch position has moved, the display control unit displays at the display screen detailed information related to the simple information.Type: ApplicationFiled: April 3, 2007Publication date: January 17, 2008Applicant: XANAVI INFORMATICS CORPORATIONInventors: Toshiaki Hiroshima, Kazuo Fukuda
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Publication number: 20070152909Abstract: An LED device comprises first to N-th (N is an integer of 2 or more) LEDs each having one end connected to one another and having different emission colors, and first to N-th transistors each having one end connected to the other ends of the individual LEDs and the other end connected to one another. The first to N-th transistors configure a current mirror circuit. A drive current supplied from outside is distributed to the individual LEDs at a current ratio corresponding to a size ratio of the individual transistors.Type: ApplicationFiled: January 5, 2006Publication date: July 5, 2007Applicant: Sanyo Electric Co., Ltd.Inventors: Kazuo Fukuda, Tsutomu Fujino, Masami Yasumoto, Mitsuhiro Omae
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Publication number: 20060139267Abstract: A light-emitting element driving apparatus includes a constant-current circuit and a control circuit. The constant-current circuit includes a plurality of constant-current sources that are connected in parallel with each other and are respectively connected in series to a light-emitting element to supply current to the light-emitting element. The constant-current sources arrange 1st to Nth (N is an integer not smaller than 2) constant-current blocks each including 1st to Mth (M is an integer not smaller than 2) constant-current sources. A current ratio among the 1st to Mth constant-current sources is substantially identical in all of the constant-current blocks.Type: ApplicationFiled: December 28, 2005Publication date: June 29, 2006Applicant: Sanyo Electric Co., Ltd.Inventors: Kazuo Fukuda, Tsutomu Fujino