Patents by Inventor Masaru Hirose

Masaru Hirose 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: 10749437
    Abstract: A power conversion device has semiconductor modules, a cooling unit, a capacitor module, a discharge resistance substrate, a control circuit substrate and a casing. The semiconductor modules from a power conversion circuit. The capacitor module is electrically connected to the semiconductor module. The discharge resistance is arranged on the discharge resistance substrate, and electrically discharges the capacitor module. The control circuit substrate controls operation of the semiconductor modules. The casing accommodates the semiconductor module, the cooling unit, the capacitor module, the discharge resistance substrate and the control circuit substrate.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: August 18, 2020
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaru Miyazaki, Tomohisa Sano, Kentaro Hirose
  • Patent number: 10615590
    Abstract: A symptom of malfunction regarding operating characteristics of a switch should be detected exactly. A switch operating characteristic monitoring device is comprised of a current sensor that measures a close command current of a switch, an auxiliary switch that outputs signals from at least two or more auxiliary contacts with reference to positions of a contactor, a measurement unit that measures signals from the current sensor and the auxiliary switch, a diagnosis unit that judges whether or not a malfunction occurs, and a display unit that displays a malfunction when a malfunction has been determined. A threshold is obtained in advance from multiple results of an opening/closing test performed beforehand. A calculation is made for characteristic times which are obtained from the close command current and signals from the auxiliary switch during actual operation of a circuit breaker. If a deviation is found by comparison with a threshold, a malfunction is determined.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: April 7, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Masaru Tatemi, Toshiaki Rokunohe, Makoto Hirose, Hideaki Uchiyama
  • Publication number: 20190334440
    Abstract: A power conversion device has semiconductor modules, a cooling unit, a capacitor module, a discharge resistance substrate, a control circuit substrate and a casing. The semiconductor modules from a power conversion circuit. The capacitor module is electrically connected to the semiconductor module. The discharge resistance is arranged on the discharge resistance substrate, and electrically discharges the capacitor module. The control circuit substrate controls operation of the semiconductor modules. The casing accommodates the semiconductor module, the cooling unit, the capacitor module, the discharge resistance substrate and the control circuit substrate.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 31, 2019
    Applicants: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaru MIYAZAKI, Tomohisa SANO, Kentaro HIROSE
  • Patent number: 10435838
    Abstract: A dyed artificial leather includes a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer, and characterized in that the lightness difference ?L* between the ultrafine fibers and the polymeric elastomer represented by the following equation meet the requirement of ?16??L*?5: ?L*=(average lightness L* of ultrafine fibers)?(average lightness L* of polymeric elastomer). A production method for dyed artificial leather includes a first dying step in which artificial leather constituted mainly of a fibrous base containing ultrafine fibers with a filament fineness of 2 decitex or less and a polymeric elastomer is dyed using a dye and a subsequent second dyeing step performed at a dye concentration that is 0.1% to 30% of the dye concentration (owf) in the first dyeing step.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: October 8, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Masaru Masaki, Katsuya Okajima, Tomoharu Hirose, Ai Suzuki, Satoshi Yanagisawa
  • Patent number: 10435680
    Abstract: A thermostable cellobiohydrolase, having a cellulose-binding motif domain including (A1) a polypeptide including an amino acid sequence represented by SEQ ID NO: 1, (B1) a polypeptide including an amino acid sequence in which at least one amino acid has been deleted, substituted, or added in the amino acid sequence represented by SEQ ID NO: 1, and having a cellulose-binding function, or (C1) a polypeptide including an amino acid sequence having 70% or greater sequence identity with the amino acid sequence represented by SEQ ID NO: 1, and having a cellulose-binding function, and also having a cellobiohydrolase catalytic domain, wherein the thermostable cellobiohydrolase exhibits hydrolysis activity against a substrate of phosphoric acid swollen Avicel at least under conditions of 95° C. and pH 5.5.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: October 8, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Jiro Okuma, Yoshitsugu Hirose, Migiwa Suda, Asuka Yamaguchi, Yasuhiro Kondo, Masaru Sato, Daisuke Shibata
  • Patent number: 8677607
    Abstract: The method according to the present invention includes the steps of: sequentially applying a plurality of different voltages to an MR element and sequentially detecting output signals from the MR element; and eliminating the MR element as a defective product when an evaluation value, based on a difference of SN ratios of the output signals from the MR element respectively obtained for each applied voltage, is less than a threshold value, and selecting the MR element as a non-defective product when the evaluation value is greater than or equal to the threshold value.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: March 25, 2014
    Assignee: TDK Corporation
    Inventors: Takumi Yanagisawa, Masaru Hirose, Shunji Saruki
  • Publication number: 20130000103
    Abstract: The method according to the present invention includes the steps of: sequentially applying a plurality of different voltages to an MR element and sequentially detecting output signals from the MR element; and eliminating the MR element as a defective product when an evaluation value, based on a difference of SN ratios of the output signals from the MR element respectively obtained for each applied voltage, is less than a threshold value, and selecting the MR element as a non-defective product when the evaluation value is greater than or equal to the threshold value.
    Type: Application
    Filed: March 7, 2008
    Publication date: January 3, 2013
    Applicant: TDK CORPORATION
    Inventors: Takumi YANAGISAWA, Masaru HIROSE, Shunji SARUKI
  • Patent number: 8085038
    Abstract: A noise-testing method for a thin-film magnetic head with an MR read head element and a heating unit capable of applying a heat and a stress to the MR read head element, includes a step of applying alternately and discontinuously with each other an electrical power having a first level and an electrical power having a second level higher than the first level to the heating unit, and a step of evaluating the thin-film magnetic head by measuring a noise output or noise outputs obtained from the MR read head element when the electrical power or the electrical powers are applied to the heating unit.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: December 27, 2011
    Assignees: TDK Corporation, SAE Magnectics (H.K.) Ltd.
    Inventors: Takumi Uesugi, Takeo Kagami, Tetsuro Sasaki, Kei Hirata, Masaru Hirose, Chi Man Lee, Kwok Piu Tso
  • Patent number: 7764468
    Abstract: Provided is a smear-removing method that can remove smear of a manufactured thin-film magnetic head. The method is performed to a thin-film magnetic head including an MR effect element for reading data having two electrode layers sandwiching an MR effect multilayer as a magneto-sensitive portion therebetween. The method comprises the step of applying a stress voltage less than a breaking voltage of the MR effect element between the two electrode layers to burn off smear. In the method, it is preferable that the stress voltage is applied while an electric resistance or an output voltage of the MR effect element is measured, and the stress voltage is increased until the value of the electric resistance or the output voltage reaches an upper limit specified value specified from a value of an electric resistance or an output voltage in a normal case where smear is not present.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: July 27, 2010
    Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.
    Inventors: Yoshikazu Sawada, Norio Takahashi, Masaru Hirose, Mitsuo Otsuki, Shoji Toyoda, Anthony Wai Yuen Lai
  • Publication number: 20080291579
    Abstract: A noise-testing method for a thin-film magnetic head with an MR read head element and a heating unit capable of applying a heat and a stress to the MR read head element, includes a step of applying alternately and discontinuously with each other an electrical power having a first level and an electrical power having a second level higher than the first level to the heating unit, and a step of evaluating the thin-film magnetic head by measuring a noise output or noise outputs obtained from the MR read head element when the electrical power or the electrical powers are applied to the heating unit.
    Type: Application
    Filed: May 25, 2007
    Publication date: November 27, 2008
    Applicants: TDK CORPORATION, SAE MAGNETICS (H.K.) LTD.
    Inventors: Takumi Uesugi, Takeo Kagami, Tetsuro Sasaki, Kei Hirata, Masaru Hirose, Chi Man Lee, Kwok Piu Tso
  • Publication number: 20080251099
    Abstract: Provided is a smear-removing method that can remove smear of a manufactured thin-film magnetic head. The method is performed to a thin-film magnetic head including an MR effect element for reading data having two electrode layers sandwiching an MR effect multilayer as a magneto-sensitive portion therebetween. The method comprises the step of applying a stress voltage less than a breaking voltage of the MR effect element between the two electrode layers to burn off smear. In the method, it is preferable that the stress voltage is applied while an electric resistance or an output voltage of the MR effect element is measured, and the stress voltage is increased until the value of the electric resistance or the output voltage reaches an upper limit specified value specified from a value of an electric resistance or an output voltage in a normal case where smear is not present.
    Type: Application
    Filed: April 16, 2007
    Publication date: October 16, 2008
    Applicants: TDK CORPORATION, SAE Magnetics (H.K.) Ltd.
    Inventors: Yoshikazu SAWADA, Norio Takahashi, Masaru Hirose, Mitsuo Otsuki, Shoji Toyoda, Anthony Wai Yuen Lai
  • Patent number: 7417820
    Abstract: A head support mechanism includes a suspension for supporting a magnetic head slider with a thin-film magnetic head, having a slider mounting section on which the magnetic head slider is fixed, and a heating unit formed on the slider mounting section of the suspension. The heating unit is capable of producing heat.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: August 26, 2008
    Assignee: TDK Corporation
    Inventors: Mitsuo Otsuki, Masaru Hirose, Yoshihiro Kudo, Katsuki Kurihara, Yuji Ito
  • Publication number: 20080137233
    Abstract: A head support mechanism includes a suspension for supporting a magnetic head slider with a thin-film magnetic head, having a slider mounting section on which the magnetic head slider is fixed, and a heating unit formed on the slider mounting section of the suspension. The heating unit is capable of producing heat.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 12, 2008
    Applicant: TDK CORPORATION
    Inventors: Mitsuo Otsuki, Masaru Hirose, Yoshihiro Kudo, Katsuki Kurihara, Yuji Ito
  • Publication number: 20060221499
    Abstract: The present invention provides a thin film magnetic head realizing the gradient and the strength of a perpendicular magnetic field increased as much as possible. A main magnetic pole layer is made recede from a write shield layer. As compared with the case where the magnetic pole layer is not receded from the write shield layer, an overlap range in which the main magnetic pole layer and the write shield layer are overlapped one another is smaller. Accordingly, the amount of magnetic flux emitted from the main magnetic pole layer toward a recording medium relatively increases, and the amount of magnetic flux leaked from the main magnetic pole layer to the write shield layer relatively decreases.
    Type: Application
    Filed: January 27, 2006
    Publication date: October 5, 2006
    Applicant: TDK CORPORATION
    Inventors: Katsumichi Tagami, Yuji Ito, Masaru Hirose, Toshiaki Maeda, Nobutaka Nishio
  • Publication number: 20050078413
    Abstract: An HGA includes a magnetic head slider provided with at least one thin-film magnetic head element, and a conductive suspension to which the magnetic head slider is fixed. A conductive resistance between the magnetic head slider and the suspension is equal to or higher than 1 M?.
    Type: Application
    Filed: September 2, 2004
    Publication date: April 14, 2005
    Applicants: SAE Magnetics (H.K) Ltd., TDK CORPORATION
    Inventors: Tatsushi Shimizu, Pak Wong, Hiroki Matsukuma, Masaru Hirose
  • Patent number: 6524723
    Abstract: Disclosed is a copper foil—for printed circuit boards—which is especially excellent in soft etching property and also superior in such properties as heat discoloration resistance, rust-proofing and solder-ability. The copper foil for printed circuit boards comprising a first layer formed by applying 12 to 50 mg/m2 of a sulfur-contained zinc alloy containing 0.1 to 2.5 percent by weight of sulfur on the surface on at least one side of the copper foil and a second layer formed of a chromate layer on the first layer by applying 0.5 to 2.5 mg/m2 of chromium and, if necessary, 1.5 to 6 mg/m2 of phosphorus.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: February 25, 2003
    Assignee: Fukuda Metal Foil & Powder Co., Ltd.
    Inventors: Masaru Hirose, Masasto Takami
  • Patent number: 6419811
    Abstract: Disclosed is a process of treating the surface of copper foil without using harmful elements such as arsenic, selenium and tellurium unlike in the prior art. It is possible to, in an easy way, obtain a uniform rough condition and low roughness and produce a high peel strength to such resin base materials as polyimide resin which is weak in peel strength. The process comprises a roughening treatment involving a cathodic electrolysis of at least one side of copper foil near or above the limiting current density in an electrolytic bath containing titanium ions and tungsten ions and prepared by adding sulfuric acid and copper sulfate so as to have copper protrusions deposited and then coating the depositions with copper or copper alloy in a cathodic electrolysis, followed by giving to the surface of the above-mentioned copper or the copper alloy at least one rust-proofing treatment.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: July 16, 2002
    Assignee: Fukuda Metal Foil & Powder Co., Ltd.
    Inventors: Hisanori Manabe, Masasto Takami, Masaru Hirose
  • Publication number: 20020017395
    Abstract: Disclosed is a copper foil—for printed circuit boards—which is especially excellent in soft etching property and also superior in such properties as heat discoloration resistance, rust-proofing and solder-ability. The copper foil for printed circuit boards comprising a first layer formed by applying 12 to 50 mg/m2 of a sulfur-contained zinc alloy containing 0.1 to 2.5 percent by weight of sulfur on the surface on at least one side of the copper foil and a second layer formed of a chromate layer on the first layer by applying 0.5 to 2.5 mg/m2 of chromium and, if necessary, 1.5 to 6 mg/m2 of phosphorus.
    Type: Application
    Filed: April 12, 2001
    Publication date: February 14, 2002
    Applicant: FUKUDA METAL FOIL & POWDER CO., LTD.
    Inventors: Masaru Hirose, Masasto Takami
  • Publication number: 20020011418
    Abstract: Disclosed is a process of treating the surface of copper foil without using harmful elements such as arsenic, selenium and tellurium unlike in the prior art. It is possible to, in an easy way, obtain a uniform rough condition and low rougheness and produce a high adhesive strength to such resin base materials as polymide resin which is weak in adhesive strength. The process comprises a roughening treatment involving a cathodic electrolysis of at least one side of copper foil near or above the limiting current density in an electrolytic bath containing titanium ions and tungsten ions and prepared by adding sulfuric acid and copper sulfate so as to have copper protrusions deposited and then coating the depositions with copper or a copper alloy in a cathodic electrolysis, followed by giving to the surface of the above-mentioned copper or the copper alloy at least one of the following rust-proofing treatments—chromate treatment, organic rust-proofing treatment and silane coupling agent treatment.
    Type: Application
    Filed: April 12, 2001
    Publication date: January 31, 2002
    Applicant: FUKUDA METAL FOIL & POWDER CO., LTD.
    Inventors: Hisanori Manabe, Masasto Takami, Masaru Hirose