Patents by Inventor Masatoshi Matsuda

Masatoshi Matsuda 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: 11451214
    Abstract: A control device for an active filter connected in parallel with a load at an installation point with respect to an AC power supply provided in a power system includes a harmonic voltage detector to detect an m-order harmonic voltage (m is an integer not less than two) included in a voltage of the installation point, a phase corrector to correct a phase of the detected m-order harmonic voltage in accordance with whether an m-order harmonic impedance when an AC power supply side is seen from the installation point is capacitive or inductive, a command value generator to generate a first compensation command value for compensating for the m-order harmonic voltage included in the voltage of the installation point based on the m-order harmonic voltage after the correction, and an output controller to control an output of the active filter based on a first compensation command value.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 20, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masatoshi Takeda, Tomohiko Tatsumi, Shinichi Ogusa, Akihiro Matsuda
  • Publication number: 20200091843
    Abstract: According to one embodiment, a motor control device controls a brushless motor including a rotor with a magnet, and a stator including multi-phase wound coils. In the motor control device, a rotational-direction detector detects a rotational direction of the brushless motor, in accordance with a hall signal detected by a hall-signal detector and a phase current detected by a phase-current detector at timing when at least one transistor is set in an energizable state.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 19, 2020
    Inventor: Masatoshi Matsuda
  • Patent number: 8692491
    Abstract: The brushless motor driver includes a sample and hold circuit which samples and holds a first value of the first comparison signal in a first case in which a current is forced to flow from a first phase coil of the three-phase brushless motor to a second phase coil and no current is forced to flow to a third phase coil in a first period having a preset setting time and a second value of the first comparison signal in a second case in which a current is forced to flow from the second phase coil to the first phase coil and no current is forced to flow to the third phase coil in a second period having the preset setting time subsequent to the first period. The brushless motor driver includes an addition circuit which adds up the first value and the second value sampled and held by the sample and hold circuit and outputs an addition signal depending upon a result of the addition.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Murai, Masatoshi Matsuda
  • Publication number: 20120119687
    Abstract: The brushless motor driver includes a sample and hold circuit which samples and holds a first value of the first comparison signal in a first case in which a current is forced to flow from a first phase coil of the three-phase brushless motor to a second phase coil and no current is forced to flow to a third phase coil in a first period having a preset setting time and a second value of the first comparison signal in a second case in which a current is forced to flow from the second phase coil to the first phase coil and no current is forced to flow to the third phase coil in a second period having the preset setting time subsequent to the first period. The brushless motor driver includes an addition circuit which adds up the first value and the second value sampled and held by the sample and hold circuit and outputs an addition signal depending upon a result of the addition.
    Type: Application
    Filed: March 23, 2011
    Publication date: May 17, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeki Murai, Masatoshi Matsuda
  • Publication number: 20100292411
    Abstract: Double bonds, which are included in the respective isoprene units of natural rubber, are converted into epoxy groups, and are subsequently converted into hydroxyl groups by hydrolyzing the resulting epoxy groups. Since it is possible to introduce hydroxyl groups into all of the double bonds securely, and moreover since it is possible to introduce many hydroxyl groups into them, it is possible to utilize the setting for films for food packaging that are good in terms of gas non-permeability.
    Type: Application
    Filed: January 16, 2009
    Publication date: November 18, 2010
    Inventors: Katsuhiko Nakajima, Masatoshi Matsuda, Yoshimasa Yamamoto, Seiichi Kawahara
  • Publication number: 20080254338
    Abstract: In an ion-conducting membrane, a polystyrene portion having ion conductivity and a polyethylene portion that forms a membrane skeleton together form a microphase-separated structure.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 16, 2008
    Inventors: Hiroki Uehara, Katsuhiko Nakajima, Masatoshi Matsuda
  • Publication number: 20060142505
    Abstract: An aliphatic polyester composition contains a low-molecular-weight aliphatic polyester having weight-average molecular weight of 5000 to 35000 and a high-molecular-weight aliphatic polyester having weight-average molecular weight of 120000 to 1000000.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 29, 2006
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuhiko Umemoto, Hirotaka Okamoto, Mitsuru Nakano, Arimitsu Usuki, Yuichi Miyake, Masatoshi Matsuda
  • Patent number: 6759465
    Abstract: A thermoplastic composition which is obtained by melt-kneading (1) 55 to 75 wt. % crystalline polypropylene resin together with (2) 10 to 30 wt. % elastomer comprising either a rubber containing a vinyl aromatic compound or a mixture thereof with an ethylene/&agr;-olefin random copolymer rubber and (3) 15 to 25 wt. % talc having an average particle diameter of 3 &mgr;m or smaller. The composition satisfies specific requirements with respect to: the long period obtained by X-ray small-angle scattering attributable to the vinyl aromatic-containing rubber in a blend obtained by melt-kneading the ingredients (1) and (2); the shape and diameter of the elastomer particles present near the polypropylene/elastomer interface in the blend; and the difference between the glass transition point of the ingredient (1) and that of the composition attributable to the crystalline polypropylene homopolymer parts.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: July 6, 2004
    Assignees: Sumitomo Chemical Company, Limited, Toyota Jidosha Kabushiki Kaisha
    Inventors: Moriyasu Shimojo, Kenichi Ohkawa, Susumu Kanzaki, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Hisayuki Iwai
  • Patent number: 6730728
    Abstract: The present invention provides a resin composition high in melting flow, exhibiting good properties, excellent in moldability and shrinkage properties, and hence suitable for automobile exteriors, by including (A) propylene/ethylene block copolymer having a melt flow rate (MFR) of 100 to 200 g/10 min., its propylene homopolymer component having an MFR of 210 to 400 g/10 min. and isotactic pentad fraction of 0.98 or more, and its copolymer portion containing propylene at 65 to 85% by weight; 50 to 70% by weight, (B) ethylene/octene and/or ethylene/butene random copolymer; 10 to 25% by weight, (C) styrene-based hydrogenated block copolymer rubber; 4 to 9% by weight and (D) talc; 16 to 24% by weight.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: May 4, 2004
    Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai, Yukihito Zanka, Mitsuhiro Murayama, Yuji Fujita, Hironari Sano
  • Patent number: 6667359
    Abstract: There are disclosed a polypropylene composition for automotive parts which has a melt index at 230° C. and at 2.16 kgf of at least 30 g/10 minutes and which comprises 55 to 60% by weight of (1) propylene/ethylene block copolymer; 20 to 25% by weight of (2) rubber comprising a styrene/ethylene/propylene/styrene block copolymer and/or a styrene/ethylene/1-butene/styrene block copolymer and an olefinic elastomer; and 18 to 23% by weight of (3) talc, and also an automotive part which comprises the above polypropylene composition.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: December 23, 2003
    Assignees: Idemitsu Petrochemical Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Nakagawa, Koki Hirano, Yutaka Obata, Yasuhisa Sugita, Takao Nomura, Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai
  • Publication number: 20030092818
    Abstract: The present invention provides a resin composition high in melting flow, exhibiting good properties, excellent in moldability and shrinkage properties, and hence suitable for automobile exteriors, by including (A) propylene/ethylene block copolymer having a melt flow rate (MFR) of 100 to 200 g/10 min., its propylene homopolymer component having an MFR of 210 to 400 g/10 min. and isotactic pentad fraction of 0.98 or more, and its copolymer portion containing propylene at 65 to 85% by weight; 50 to 70% by weight, (B) ethylene/octene and/or ethylene/butene random copolymer; 10 to 25% by weight, (C) styrene-based hydrogenated block copolymer rubber; 4 to 9% by weight and (D) talc; 16 to 24% by weight.
    Type: Application
    Filed: January 11, 2002
    Publication date: May 15, 2003
    Inventors: Masatoshi Matsuda, Hisayuki Iwai, Takayuki Nagai, Yukihito Zanka, Mitsuhiro Murayama, Yuji Fujita, Hironari Sano
  • Patent number: 6156836
    Abstract: This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: December 5, 2000
    Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kunio Iwanami, Akira Kobayashi, Mitsuhiro Murayama, Yuji Fujita, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Osamu Kito, Hisayuki Iwai
  • Patent number: 6121363
    Abstract: A crystalline propyleiie block-copolymer composition exhibiting superior flowability upon molding for use in automobile parts, which composition comprises 41 to 71% by weight of a crystalline propylene block-copolymer composed of a propylene homopolymer portion (Fp) and an ethylene/propylene random copolymer portion (Fc) and having an ethylene content of 1 to 10% by weight and a melt flow rate (MFR) of 20 to 100 g/10 min.; 12 to 22% by weight of a first hydrogenated product of a block-copolymer having a relatively smaller stylene content; 2 to 12% by weight of a second hydrogenated product of a block-copolymer having a relatively greater stylene content; and 15 to 25% by weight of talc, wherein the propylene homopolymer portion (Fp) contains 20 to 50% by weight of a low molecular weight propylene homopolymer having an MFR of 400 to 1,000 g/10 min., the average MFR being 100 to 350 g/10 min.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: September 19, 2000
    Assignees: Grand Polymer Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Ikunori Sakai, Mikio Hashimoto, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Osamu Kito, Hisayuki Iwai
  • Patent number: 5061645
    Abstract: A method of manufacturing a bipolar transistor semiconductor device wherein the active regions of a transistor are formed in an opening provided in an insulating film, electrodes are led out by a polycrystalline silicon film formed on the insulating film, and the upper surfaces of the emitter and base electrodes and the exposed surface of the insulating film are substantially even.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: October 29, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Nakazato, Tohru Nakamura, Masatoshi Matsuda, Takao Miyazaki, Tokuo Kure, Takahiro Okabe, Minoru Nagata
  • Patent number: 4825281
    Abstract: A semiconductor device wherein the active regions of a transistor are formed in an opening provided in an insulating film, electrodes are led out by a polycrystalline silicon film formed on the insulating film, and the upper surfaces of the emitter and base electrodes and the exposed surface of the insulating film are substantially even.
    Type: Grant
    Filed: October 21, 1982
    Date of Patent: April 25, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Nakazato, Tohru Nakamura, Masatoshi Matsuda, Takao Miyazaki, Tokuo Kure, Takahiro Okabe, Minoru Nagata
  • Patent number: 4440631
    Abstract: A catalyst for hydrocracking heavy hydrocarbon oils includes a porous inorganic carrier composed mainly of alumina or titania, and two or more catalytic metal components composited with the carrier. The metals of the catalytic metal components are either (a) V and at least one element selected from Zn, Fe, Co, Ni, Cu, Ag, Sn and Pb or (b) Mo and at least one element selected from Zn, Cu, Ag, Sn, Pb and the lanthanum-series elements. The catalyst has at least 60% of its total pore volume in pores with a diameter of 200 .ANG. or more, at least 40% of its totalpore volume in pores with a diameter of 300 .ANG. or more and not more than 20% of its total pore volume in pores with a diameter of at least 1000 .ANG.. Disclosed also is a process for hydrocracking a heavy hydrocarbon oil in the presence of the above catalyst.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: April 3, 1984
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Osamu Togari, Masatoshi Matsuda, Kenji Shimokawa, Toshiji Makabe
  • Patent number: 4196102
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: April 1, 1980
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Yoshihoro Ohguchi, Munekazu Nakamura, Tatsuo Morimoto
  • Patent number: 4152250
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: May 1, 1979
    Assignee: Chiyoda Chemical Engineering & Construction
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Yoshihiro Ohguchi, Munekazu Nakamura, Tatsuo Morimoto
  • Patent number: RE31036
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Chiyoda Chemical Engineering and Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda, Masaaki Kasuya, Munekazu Nakamura, Tatsuo Morimoto
  • Patent number: RE31037
    Abstract: This invention relates to a catalyst for hydrotreatment of hydrocarbons comprising one or more of metals selected from the group consisting of transition metals and metals of group IIb of the periodic table supported on sepiolite. More particularly it relates to a catalyst effective in the selective demetallization treatment of hydrocarbons.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: September 21, 1982
    Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Masayoshi Inooka, Motoyoshi Wakabayashi, Masatoshi Matsuda