Patents by Inventor Kiyoshi Yoshida

Kiyoshi Yoshida 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: 10241080
    Abstract: A magnet evaluation device is provided for evaluating a magnet having at least two magnetic pieces bonded to an insulating material sandwiched between two adjacent ones of the magnetic pieces. The magnet evaluation device has an excitation coil and a detection coil. The excitation coil is configured to generate a magnetic field that has a size in a range that corresponds to a region including the insulating material. The detection coil has a coil diameter that is smaller than a length of one of the magnetic pieces in a direction in which the magnetic pieces are aligned.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: March 26, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tadashi Komai, Yutaka Suzuki, Kiyoshi Yoshida, Kohei Murota, Kunitomo Ishiguro, Yasuhisa Koike, Hideo Mogi
  • Patent number: 9988269
    Abstract: The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80° C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: June 5, 2018
    Assignee: MITSUBISHI GAS CHEMICAL CO., INC.
    Inventors: Kiyoshi Yoshida, Tetsuo Koshitsuka, Kaoru Tsuyuki, Wakana Uesugi
  • Publication number: 20160046490
    Abstract: The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80° C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.
    Type: Application
    Filed: October 1, 2015
    Publication date: February 18, 2016
    Inventors: Kiyoshi YOSHIDA, Tetsuo KOSHITSUKA, Kaoru TSUYUKI, Wakana UESUGI
  • Patent number: 9181094
    Abstract: The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80° C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: November 10, 2015
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kiyoshi Yoshida, Tetsuo Koshitsuka, Kaoru Tsuyuki, Wakana Uesugi
  • Patent number: 8900408
    Abstract: Provided is a process for producing bleached pulp, including subjecting unbleached pulp, which is obtained by cooking a lignocellulose substance, to alkali-oxygen bleaching treatment and then subjecting the alkali-oxygen bleached pulp to chlorine-free bleaching treatment including chlorine dioxide treatment, wherein in at least one chlorine dioxide treatment stage in which the chlorine dioxide treatment is performed, monopersulfuric acid is used in combination. The amount of chlorine dioxide to be used is reduced and the color reversion resistance of the bleached pulp is improved by this process.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kiyoshi Yoshida, Tetsuo Koshitsuka, Eiko Kuwabara, Takashi Ishii
  • Publication number: 20140312889
    Abstract: A magnet evaluation device is provided for evaluating a magnet having at least two magnetic pieces bonded to an insulating material sandwiched between two adjacent ones of the magnetic pieces. The magnet evaluation device has an excitation coil and a detection coil. The excitation coil is configured to generate a magnetic field that has a size in a range that corresponds to a region including the insulating material. The detection coil has a coil diameter that is smaller than a length of one of the magnetic pieces in a direction in which the magnetic pieces are aligned.
    Type: Application
    Filed: October 25, 2012
    Publication date: October 23, 2014
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Tadashi Komai, Yutaka Suzuki, Kiyoshi Yoshida, Kohei Murota, Kunitomo Ishiguro, Yasuhisa Koike, Hideo Mogi
  • Publication number: 20110059665
    Abstract: A water-absorbing quick drying woven or knitted fabric characterized by containing 20% by weight or more of sheath-core type polyester fiber satisfying the following (1) to (4) requirements: (1) the fiber is a modified cross-section fiber having one or more recessed portions in its single yarn section; (2) the sheath part contains polyethylene glycol, and weight ratio of sheath part/core part is in a range of 20/80 to 50/50; (3) an amount of polyethylene glycol in the sheath-core type polyester fiber be in a range of 0.1 to 1.0% by weight; (4) long streak-like grooves A and short streak-like grooves B are present in a mixed state along the direction of fiber axis, and lengths of the streak-like grooves A and streak-like grooves B are 30 ?m or more and 15 ?m or more, respectively; provided that, P is a ratio of length to width of the groove, and represented by P=[Length]/[Width].
    Type: Application
    Filed: June 13, 2008
    Publication date: March 10, 2011
    Inventor: Kiyoshi Yoshida
  • Publication number: 20100314056
    Abstract: Provided is a process for producing bleached pulp, including subjecting unbleached pulp, which is obtained by cooking a lignocellulose substance, to alkali-oxygen bleaching treatment and then subjecting the alkali-oxygen bleached pulp to chlorine-free bleaching treatment including chlorine dioxide treatment, wherein in at least one chlorine dioxide treatment stage in which the chlorine dioxide treatment is performed, monopersulfuric acid is used in combination. The amount of chlorine dioxide to be used is reduced and the colour reversion resistance of the bleached pulp is improved by this process.
    Type: Application
    Filed: December 5, 2008
    Publication date: December 16, 2010
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kiyoshi Yoshida, Tetsuo Koshitsuka, Eiko Kuwabara, Takashi Ishii
  • Publication number: 20100244754
    Abstract: A sensorless-brushless motor control device comprises an inverter, an inverter drive circuit that drives the inverter and a current control part that controls the inverter drive circuit according to a current command from a superior control part and includes a first order lag compensating part. The device is characterized by further comprising a control mode changeover judging part that judges changeover of a control gain of the current control part after startup of the sensorless-brushless motor in response to a motor revolution sensing signal from the inverter drive circuit and a control mode changeover part that changes over the control gain of the current control part in response to an output of the control mode changeover judging part.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 30, 2010
    Applicant: Hitachi Car Engineering Co., Ltd.
    Inventors: Katsuji Marumoto, Kiyoshi Yoshida, Heikichi Tanno, Junichi Noda, Masami Nagano
  • Publication number: 20100112094
    Abstract: The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80° C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.
    Type: Application
    Filed: October 18, 2007
    Publication date: May 6, 2010
    Inventors: Kiyoshi Yoshida, Tetsuo Koshitsuka, Kaoru Tsuyuki, Wakana Uesugi
  • Publication number: 20060147568
    Abstract: According to the present invention, there is provided a blood pressure-lowering agent, a vascular flexibility-ameliorating agent and foods having these functions imparted thereto, which are comprising isohumulones or a hop extract and/or an isomerized hop extract as an active ingredient.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 6, 2006
    Inventors: Akihiko Takeuchi, Taku Sato, Hiroaki Yajima, Yutaka Miura, Keiji Kondo, Aruto Yoshida, Kiyoshi Yoshida, Junko Tomita
  • Patent number: 6759507
    Abstract: At the time of preparing polyphenylene ether resin, there can be separated and recovered efficiently an aromatic compound solvent, amines making an azeotrope with water (hereafter, referred to as ‘the amines’ for short.) and methanol.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: July 6, 2004
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Kiyoshi Yoshida, Naoto Ohsaki, Hiroya Fujii
  • Patent number: 6635347
    Abstract: A mixed fiber article dyed with disperse dye, composed of fiber dyeable with disperse dye and polyurethane fiber, having a color fastness to a perspiration-alkali test of grade 3 or higher according to the JIS L-0848-A Method and having a surface color shade of 20 or less in terms of L value determined by spectro-colorimetry. The dyed mixed fiber article containing polyurethane fiber can be prepared by dyeing a mixed fiber article composed of disperse dyeable fiber and polyurethane fiber, such as a co-knitted fabric, either in a dye bath in the presence of polyvalent metallic compound and tannic acid or after the co-knitted fabric has been treated in a bath containing polyvalent metallic compound and tannic acid.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: October 21, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Kiyoshi Yoshida
  • Patent number: 6627727
    Abstract: Polyphenylene ether particles which contain fine powder in a small amount and are easy to handle at the time of molding, are obtained. A method for precipitating polyphenylene ether, which comprises adding a non-solvent for polyphenylene ether to a solution of polyphenylene ether in a good solvent for polyphenylene ether to precipitate polyphenylene ether continuously in a stirring vessel with a reciprocating stirrer, wherein the polyphenylene ether solution is dropped outside the working range of a stirring blade.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: September 30, 2003
    Assignee: Mitsubishi Gas Chemical Co
    Inventors: Kiyoshi Yoshida, Naoto Ohsaki, Hiroya Fujii
  • Patent number: 6612259
    Abstract: The present invention provides an effective oxygen generating materials, carbon dioxide absorbing materials, and transport system and transport method of live fishery products for use upon transporting live fishery products. An oxygen generating materials of the present invention is prepared by packaging solid peroxide and peroxide decomposition catalyst with a moisture-permeable material having a cup method moisture permeability (40° C., 90% RH) of more than 20 g/m2/24 hr and being impervious to water at normal pressure. Furthermore, a carbon dioxide absorbing materials are prepared by packaging alkaline earth metal hydroxide and/or oxide with a gas-permeable material having a Gurley method gas permeability (JIS P8117) of 0.1˜3000 sec./100 ml of gas and being impervious to water at normal pressure.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: September 2, 2003
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kiyoshi Yoshida, Yasuo Hiro, Jun Kokubo, Chiharu Nishizawa, Susumu Watanabe
  • Publication number: 20020001548
    Abstract: The present invention provides an effective oxygen generating materials, carbon dioxide absorbing materials, and transport system and transport method of live fishery products for use upon transporting live fishery products. An oxygen generating materials of the present invention is prepared by packaging solid peroxide and peroxide decomposition catalyst with a moisture-permeable material having a cup method moisture permeability (40° C., 90% RH) of more than 20 g/m2/24 hr and being impervious to water at normal pressure. Furthermore, a carbon dioxide absorbing materials are prepared by packaging alkaline earth metal hydroxide and/or oxide with a gas-permeable material having a Gurley method gas permeability (JIS P8117) of 0.1˜3000 sec./100 ml of gas and being impervious to water at normal pressure.
    Type: Application
    Filed: August 7, 2001
    Publication date: January 3, 2002
    Inventors: Kiyoshi Yoshida, Yasuo Hiro, Jun Kokubo, Chiharu Nishizawa, Susumu Watanabe
  • Patent number: 6306352
    Abstract: The present invention provides an effective oxygen generating materials, carbon dioxide absorbing materials, and transport system and transport method of live fishery products for use upon transporting live fishery products. An oxygen generating materials of the present invention is prepared by packaging solid peroxide and peroxide decomposition catalyst with a moisture-permeable material having a cup method moisture permeability (40° C., 90% RH) of more than 20 g/m2/24 hr and being impervious to water at normal pressure. Furthermore, a carbon dioxide absorbing materials are prepared by packaging alkaline earth metal hydroxide and/or oxide with a gas-permeable material having a Gurley method gas permeability (JIS P8117) of 0.1˜3000 sec./100 ml of gas and being impervious to water at normal pressure.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: October 23, 2001
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kiyoshi Yoshida, Yasuo Hiro, Jun Kokubo, Chiharu Nishizawa, Susumu Watanabe
  • Patent number: 6302510
    Abstract: A mark selection sheet is prepared. The mark selection sheet is preprinted with a plurality of setting marks. The setting marks are printed at various positions and with various sizes. Intensity of light reflected from each setting mark is detected by a reflection type sensor. Based on the detected results, an optimum position, an optimum height, and an optimum width of a quality-check mark is selected, and then stored in an EEPROM.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: October 16, 2001
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kiyoshi Yoshida
  • Patent number: 5986134
    Abstract: A process for continuously and stably synthesizing a ketazine from hydrogen peroxide, ammonia and methyl ethyl ketone in the presence of a solution containing a catalyst. The process comprises removing sec-butyl alcohol by distillation from methyl ethyl ketone, which is reused by circulation. Also a process for preparing a hydrazine hydrate which comprises hydrolyzing the ketazine. By circulating unreacted ketone, accumulation of impurities in the circulated ketone can be prevented to obtain a high yield of the ketazine and the hydrazine hydrate, for a long period of time.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: November 16, 1999
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yasuhisa Kuriyama, Nobuhiro Nagata, Kiyoshi Yoshida
  • Patent number: 5963328
    Abstract: A surface inspecting apparatus includes linear light sources 11, 13 for emitting illumination light toward a surface of a body panel 10 to be inspected, CCD cameras 12, 14 for imaging the surface and forming its illuminated images on the basis of reflection light from the surface, and an inspecting unit for detecting a defect existing on the surface on a basis of the illuminated image and outputting detected information about the defect. In the arrangement, the sources 11, 13 are arranged so as to obliquely emit the illumination light toward the surface at incident angles .alpha. from 80 to 90 degrees. While, the cameras 12, 14 are arranged so as to receive diffused reflection light of the illumination light reflected by the surface at reflection angles .beta. each smaller than the incident angle .alpha..
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: October 5, 1999
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kiyoshi Yoshida, Yoshitaka Usui, Norikazu Tsubaki