Patents by Inventor Masakatsu Takahashi
Masakatsu Takahashi 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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Publication number: 20230059894Abstract: The present invention relates to a composition comprising at least an ether carboxylic acid. The present invention also relates to the method for obtaining of the composition and to the use of the composition in industrial applications such as engine oil compositions, metal working compositions, lubricant compositions and oil fuel compositions.Type: ApplicationFiled: December 23, 2020Publication date: February 23, 2023Applicant: Kao Chemicals GmbHInventors: Thomas Myrdek, Reinout Van der Veen, Michael Staples, Masakatsu Takahashi
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Patent number: 8810052Abstract: A control device for controlling a rotary electrical machine functioning as a motor and as a power generator, the device being provided with a power conversion circuit serving to function as an inverter for supplying a drive current from a battery to the rotary electrical machine and as a rectifier for rectifying the power generation output of the rotary electrical machine and supplying the output to the battery; and being provided with a controller for controlling the conversion circuit so that three-phase armature coils of the rotary electrical machine are short-circuited when the battery is disconnected from the conversion circuit and the DC output voltage of the conversion circuit becomes excessive, after which, when the DC output voltage of the conversion circuit decreases to a set low voltage, the short circuit of one phase of the armature coil is released and only two phases are short-circuited.Type: GrantFiled: November 10, 2010Date of Patent: August 19, 2014Assignee: Kokusan Denki Co., LtdInventors: Kazuyoshi Kishibata, Masakatsu Takahashi
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Publication number: 20130234446Abstract: A control device for controlling a rotary electrical machine functioning as a motor and as a power generator, the device being provided with a power conversion circuit serving to function as an inverter for supplying a drive current from a battery to the rotary electrical machine and as a rectifier for rectifying the power generation output of the rotary electrical machine and supplying the output to the battery; and being provided with a controller for controlling the conversion circuit so that three-phase armature coils of the rotary electrical machine are short-circuited when the battery is disconnected from the conversion circuit and the DC output voltage of the conversion circuit becomes excessive, after which, when the DC output voltage of the conversion circuit decreases to a set low voltage, the short circuit of one phase of the armature coil is released and only two phases are short-circuited.Type: ApplicationFiled: November 10, 2010Publication date: September 12, 2013Applicant: KOKUSAN DENKI CO., LTDInventors: Kazuyoshi Kishibata, Masakatsu Takahashi
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Patent number: 8476478Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.Type: GrantFiled: February 16, 2012Date of Patent: July 2, 2013Assignee: Kao CorporationInventors: Nobuyoshi Suzuki, Masazumi Tamura, Yohei Yoshikawa, Taku Mimura, Masakatsu Takahashi
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Publication number: 20120142976Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.Type: ApplicationFiled: February 16, 2012Publication date: June 7, 2012Applicant: KAO CORPORATIONInventors: Nobuyoshi SUZUKI, Masazumi TAMURA, Yohei YOSHIKAWA, Taku MIMURA, Masakatsu TAKAHASHI
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Patent number: 8188321Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.Type: GrantFiled: April 4, 2008Date of Patent: May 29, 2012Assignee: Kao CorporationInventors: Nobuyoshi Suzuki, Masazumi Tamura, Yohei Yoshikawa, Taku Mimura, Masakatsu Takahashi
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Patent number: 7888828Abstract: A starter generator which includes a rotor having a cuplike-shaped rotor yoke and magnets attached to an inner periphery of the rotor yoke, a stator mounted on a stator bracket and a protecting cover covering said rotor and stator, in which a hermetically sealed casing is constituted by said protecting cover and stator bracket, wherein a plurality of fans are provided on an outer surface of a bottom wall portion of said rotor yoke, a plurality of vent holes are provided through said bottom wall portion, said plurality of fans constitute a centrifugal fan which draws out air inside the rotor yoke through said vent holes and sends the air to an outer periphery of the rotor yoke, and a guide surface which guides the air sent to the outer periphery of the rotor yoke to a space inside the rotor yoke is provided on the stator bracket.Type: GrantFiled: May 13, 2009Date of Patent: February 15, 2011Assignee: Kokusan Denki Co., Ltd.Inventors: Masakatsu Takahashi, Kazuyoshi Kishibata
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Patent number: 7799957Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a high selectivity as well as hydrogenolysis catalysts used in the hydrogenolysis reaction. The present invention provides a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing (A) a platinum-supporting heterogeneous catalyst component and (B) at least one catalyst component selected from the group consisting of tungsten components and molybdenum components, or in the presence of a catalyst containing a heterogeneous catalyst component formed by supporting (A?) platinum and the above catalyst component (B), on a common carrier; as well as catalysts for hydrogenolysis of polyhydric alcohols.Type: GrantFiled: April 23, 2007Date of Patent: September 21, 2010Assignee: KAO CorporationInventors: Nobuyoshi Suzuki, Yohei Yoshikawa, Masakatsu Takahashi, Masazumi Tamura
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Publication number: 20100113841Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.Type: ApplicationFiled: April 4, 2008Publication date: May 6, 2010Applicant: KAO CORPORATIONInventors: Nobuyoshi Suzuki, Masazumi Tamura, Yohei Yoshikawa, Taku Mimura, Masakatsu Takahashi
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Publication number: 20090284087Abstract: A starter generator which comprises a rotor having a cuplike-shaped rotor yoke and magnets attached to an inner periphery of the rotor yoke, a stator mounted on a stator bracket and a protecting cover covering said rotor and stator, in which a hermetically sealed casing is constituted by said protecting cover and stator bracket, wherein a plurality of fans are provided on an outer surface of a bottom wall portion of said rotor yoke, a plurality of vent holes are provided through said bottom wall portion, said plurality of fans constitute a centrifugal fan which draws out air inside the rotor yoke through said vent holes and sends the air to an outer periphery of the rotor yoke, and a guide surface which guides the air sent to the outer periphery of the rotor yoke to a space inside the rotor yoke is provided on the stator bracket.Type: ApplicationFiled: May 13, 2009Publication date: November 19, 2009Applicant: Kokusan Denki co., Ltd.Inventors: Masakatsu TAKAHASHI, Kazuyoshi Kishibata
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Publication number: 20090177018Abstract: The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a high selectivity as well as hydrogenolysis catalysts used in the hydrogenolysis reaction. The present invention provides a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing (A) a platinum-supporting heterogeneous catalyst component and (B) at least one catalyst component selected from the group consisting of tungsten components and molybdenum components, or in the presence of a catalyst containing a heterogeneous catalyst component formed by supporting (A?) platinum and the above catalyst component (B), on a common carrier; as well as catalysts for hydrogenolysis of polyhydric alcohols.Type: ApplicationFiled: April 23, 2007Publication date: July 9, 2009Applicant: KAO CORPORATIONInventors: Nobuyoshi Suzuki, Yohei Yoshikawa, Masakatsu Takahashi, Masazumi Tamura
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Patent number: 7423357Abstract: An electric rotating machine which comprises: a magnet rotor which has a rotor yoke having a magnetic attachment surface extending in a peripheral direction, and multiple permanent magnets for constituting a magnetic field which are intermittently arranged in the peripheral direction of the rotor yoke and are attached on the magnetic attachment surface; and a stator in which armature coils are wound around an armature core having a magnetic pole portions opposed to magnetic poles of the magnet rotor, wherein a large number of grooves which extend in the peripheral direction of the rotor yoke are provided on the magnet attachment surface of the rotor yoke.Type: GrantFiled: September 5, 2006Date of Patent: September 9, 2008Assignee: Kokussan Denki Co., Ltd.Inventors: Masakatsu Takahashi, Hiroshi Kanazawa
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Patent number: 7253590Abstract: An output control device of a generation device including: a rectifier circuit that rectifies an output of an AC generator and applies the output across a battery; an inverter circuit provided between the battery and the generator; inverter control means for controlling the inverter circuit to convert a voltage across the battery into an AC control voltage and apply the voltage to an armature winding of the generator; and phase detection means for detecting a phase of a phase current flowing through the armature winding of the generator as a maximum output current phase, wherein the inverter control means is comprised to control a phase of the AC control voltage so as not to be delayed with respect to the maximum output current phase, and thus prevent a reduction in the output of the generator caused by an excessive delay of the phase of the AC control voltage.Type: GrantFiled: November 1, 2005Date of Patent: August 7, 2007Assignee: Kokusan Denki Co., Ltd.Inventors: Hideaki Suzuki, Masakatsu Takahashi, Shuichi Muramatsu, Tomohiro Nakagawa
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Patent number: 7211116Abstract: Provided are a hair bleach composition, hair dye composition and a hair treatment additive having excellent bleaching power, capable of dyeing the hair with a bright and good color, and less damaging to the hair and less irritating to the scalp. Described specifically, they are a two-part hair bleach composition, which contains (a) a nitrogenous compound represented by the following formula (1) or (2): or salt thereof, or (A) a nitrogenous compound having a solubility parameter log P in octanol/water ranging from ?1 to 4 and a hydrogen peroxide remaining ratio of from 5 to 90%, or salt thereof, (b) an oxidizing agent, and optionally (c) an alkali agent and, after mixing, has a pH of from 7.5 to 12; a two-part hair dye composition comprising (a) or (A), (b) and (c) and further (d) an oxidation dye or direct dye; and an additive used therefor.Type: GrantFiled: December 13, 2002Date of Patent: May 1, 2007Assignee: Kao CorporationInventors: Akira Kiyomine, Masaki Fukuhara, Masayoshi Nojiri, Hideyuki Abe, Masakatsu Takahashi, Hiromoto Mizushima
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Publication number: 20070090708Abstract: An electric rotating machine which comprises: a magnet rotor which has a rotor yoke having a magnetic attachment surface extending in a peripheral direction, and multiple permanent magnets for constituting a magnetic field which are intermittently arranged in the peripheral direction of the rotor yoke and are attached on the magnetic attachment surface; and a stator in which armature coils are wound around an armature core having a magnetic pole portions opposed to magnetic poles of the magnet rotor, wherein a large number of grooves which extend in the peripheral direction of the rotor yoke are provided on the magnet attachment surface of the rotor yoke.Type: ApplicationFiled: September 5, 2006Publication date: April 26, 2007Applicant: Kokusan Denki Co., Ltd.Inventors: Masakatsu Takahashi, Hiroshi Kanazawa
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Patent number: 7081738Abstract: A generating device that includes an AC/DC conversion unit having a rectifier circuit that rectifies an output of a magneto rotor and applies the output to a battery, and an inverter circuit that converts a voltage of the battery into an AC control voltage and applies the AC control voltage to an armature coil of the magneto generator, performs chopper control that controls switch elements of the inverter circuit so as to interrupt an output current of the magneto generator to control the output of the magneto generator when a rotational speed of the magneto generator is lower than a set speed, and performs drive control that applies the AC control voltage from the battery through the inverter circuit to the armature coil when the rotational speed becomes higher than the set speed, and changes a phase angle of the AC control voltage to control the output of the magneto generator.Type: GrantFiled: October 26, 2004Date of Patent: July 25, 2006Assignee: Kokusan Denki Co., Ltd.Inventors: Shuichi Muramatsu, Hideaki Suzuki, Masanori Nakagawa, Masakatsu Takahashi
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Publication number: 20060097703Abstract: An output control device of a generation device including: a rectifier circuit that rectifies an output of an AC generator and applies the output across a battery; an inverter circuit provided between the battery and the generator; inverter control means for controlling the inverter circuit to convert a voltage across the battery into an AC control voltage and apply the voltage to an armature winding of the generator; and phase detection means for detecting a phase of a phase current flowing through the armature winding of the generator as a maximum output current phase, wherein the inverter control means is comprised to control a phase of the AC control voltage so as not to be delayed with respect to the maximum output current phase, and thus prevent a reduction in the output of the generator caused by an excessive delay of the phase of the AC control voltage.Type: ApplicationFiled: November 1, 2005Publication date: May 11, 2006Applicant: Kokusan Denki Co.,Ltd.Inventors: Hideaki Suzuki, Masakatsu Takahashi, Shuichi Muramatsu, Tomohiro Nakagawa
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Patent number: 7026774Abstract: A rotor position determination device for determining a position of a rotor of a rotating electric machine relative to m-phase (m is an integer equal to or more than 2) armature coils, the rotating electric machine including a stator having the m-phase armature coils, and the rotor having a magnetic field, includes: transient current energizing means for performing, for each of the m-phase armature coils, a transient current energizing process for temporarily applying a DC voltage to the armature coil of each phase of the rotating electric machine to pass a transient current through the armature coil of each phase; and rotor position determination means for detecting the transient current passed through each of the m-phase armature coils and determining the position of the rotor relative to the m-phase armature coils from the detected transient currents.Type: GrantFiled: July 25, 2005Date of Patent: April 11, 2006Assignee: Kokusan Denki Co., Ltd.Inventors: Yutaka Inaba, Masakatsu Takahashi, Tomohiro Nakagawa
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Publication number: 20060022623Abstract: A rotor position determination device for determining a position of a rotor of a rotating electric machine relative to m-phase (m is an integer equal to or more than 2) armature coils, the rotating electric machine including a stator having the m-phase armature coils, and the rotor having a magnetic field, includes: transient current energizing means for performing, for each of the m-phase armature coils, a transient current energizing process for temporarily applying a DC voltage to the armature coil of each phase of the rotating electric machine to pass a transient current through the armature coil of each phase; and rotor position determination means for detecting the transient current passed through each of the m-phase armature coils and determining the position of the rotor relative to the m-phase armature coils from the detected transient currents.Type: ApplicationFiled: July 25, 2005Publication date: February 2, 2006Applicant: Kokusan Denki Co., LtdInventors: Yutaka Inaba, Masakatsu Takahashi, Tomohiro Nakagawa
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Publication number: 20050102770Abstract: Provided are a hair bleach composition, hair dye composition and a hair treatment additive having excellent bleaching power, capable of dyeing the hair with a bright and good color, and less damaging to the hair and less irritating to the scalp. Described specifically, they are a two-part hair bleach composition, which contains (a) a nitrogenous compound represented by the following formula (1) or (2): or salt thereof, or (A) a nitrogenous compound having a solubility parameter logP in octanol/water ranging from ?1 to 4 and a hydrogen peroxide remaining ratio of from 5 to 90%, or salt thereof, (b) an oxidizing agent, and optionally (c) an alkali agent and, after mixing, has a pH of from 7.5 to 12; a two-part hair dye composition comprising (a) or (A), (b) and (c) and further (d) an oxidation dye or direct dye; and an additive used therefor.Type: ApplicationFiled: December 13, 2002Publication date: May 19, 2005Inventors: Akira Kiyomine, Masaki Fukuhara, Masayoshi Nojiri, Hideyuki Abe, Masakatsu Takahashi, Hiromoto Mizushima