Patents by Inventor Masayuki Nagasawa
Masayuki Nagasawa 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: 20240135962Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, a conductive part, an element part, and first to fourth terminals. The conductive part is electrically insulated from the first and second magnetic poles. The first and second terminals are electrically connected to the conductive part. The element part is provided between the first and second magnetic poles and electrically connected to the first and second magnetic poles. The element part is conductive. The third terminal is electrically connected to the first magnetic pole. The fourth terminal is electrically connected to the second magnetic pole. A first magnetic pole temperature in a first state is higher than a second magnetic pole temperature of the second magnetic pole in the first state. A first current is supplied between the first and second terminals in the first state.Type: ApplicationFiled: July 24, 2023Publication date: April 25, 2024Inventors: Yuji NAKAGAWA, Naoyuki NARITA, Tomoyuki MAEDA, Masayuki TAKAGISHI, Tazumi NAGASAWA, Ryo OSAMURA, Kosuke KURIHARA
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Patent number: 11459938Abstract: An internal combustion system includes a control device having an accumulated amount of time measuring unit that measures an accumulated amount of time by measuring an amount of time when the temperature of the coolant measured by a temperature sensor is equal to or higher than a defined temperature and accumulating the amount of time measured, an exchange determination unit that determines that the coolant needs to be exchanged when the measured accumulated amount of time reaches or exceeds an upper-limit accumulated amount of time, and an upper-limit amount of time setting unit that sets the upper-limit accumulated amount of time for determination by the determination unit in accordance with the type of metal forming the flow channel where the coolant flows.Type: GrantFiled: December 16, 2021Date of Patent: October 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Yoichiro Yoshii, Masayuki Nagasawa, Shinichi Ogura
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Publication number: 20220195911Abstract: An internal combustion system includes a control device having an accumulated amount of time measuring unit that measures an accumulated amount of time by measuring an amount of time when the temperature of the coolant measured by a temperature sensor is equal to or higher than a defined temperature and accumulating the amount of time measured, an exchange determination unit that determines that the coolant needs to be exchanged when the measured accumulated amount of time reaches or exceeds an upper-limit accumulated amount of time, and an upper-limit amount of time setting unit that sets the upper-limit accumulated amount of time for determination by the determination unit in accordance with the type of metal forming the flow channel where the coolant flows.Type: ApplicationFiled: December 16, 2021Publication date: June 23, 2022Inventors: Yasuaki KODAMA, Yoichiro YOSHII, Masayuki NAGASAWA, Shinichi OGURA
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Publication number: 20220082518Abstract: A method of manufacturing a mold by a machine tool, the method including predicting a thermal fatigue life of a mold which is made of a mold material having a hardness H and on which heating during contact with a workpiece and cooling after contact with a workpiece are repeated, the method including a step for obtaining a thermal stress maximum value ?h_MAX among a plurality of thermal stress values at a position x on the mold and a temperature Th at the thermal stress maximum value, wherein the temperature at the thermal stress maximum value ?h_MAX is a temperature lower than a maximum temperature among the plurality of temperatures, the machine tool manufactures the predetermined mold shape from a mold material having one of the plurality of hardnesses in which the thermal fatigue life was obtained based on the thermal stress maximum value, the yield strength, and the contraction.Type: ApplicationFiled: November 25, 2021Publication date: March 17, 2022Applicant: HITACHI METALS, LTD.Inventors: Haruyuki MORI, Masataka SATO, Masayuki NAGASAWA
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Patent number: 11108102Abstract: The present disclosure provides a battery coolant for an electric vehicle that has a low conductivity, a low ion elution performance, a low viscosity at a very low temperature, and a cooling performance equivalent to that of an aqueous coolant composition in a driving temperature range. The present disclosure relates to a battery coolant for an electric vehicle containing at least one kind of carbonates selected from the group consisting of propylene carbonate and butylene carbonate in an amount of 90 mass % or more with respect to a total mass of the coolant and water in an amount of 3 mass % or less with respect to the total mass of the coolant.Type: GrantFiled: November 6, 2019Date of Patent: August 31, 2021Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Arai, Yasuaki Kodama, Masayuki Nagasawa, Yoshimichi Umehara, Yoichiro Yoshii, Yu Sasaki
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Patent number: 10913883Abstract: A coolant composition includes a viscosity improving agent and a base. The viscosity improving agent includes at least one nonionic surfactant and at least one anionic surfactant represented by the following Formula (1) of R1O—(R2O)m—SO3M. The base is formed of water and/or at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether. R1 represents a linear or branched alkyl group having 16 to 24 carbon atoms or a linear or branched alkenyl group having 16 to 24 carbon atoms, R2 represents an ethylene group or a propylene group, m represents an average addition molar number of R2O which is a number of 0.5 to 10, and M represents a cation or a hydrogen atom. A shear viscosity of the coolant composition is 8.5 mPa·s or higher at 25° C. and is 2.0 mPa·s or lower at 100° C.Type: GrantFiled: April 3, 2017Date of Patent: February 9, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Shogo Kamenoue, Kazuhito Yaeda, Yoichiro Yoshii, Masayuki Nagasawa
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Patent number: 10899952Abstract: An automotive engine coolant composition includes: a non-silicone surfactant; an anti-foaming agent containing a mineral oil and silica; and a base, in which the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C. and 2.0 mm2/s or less at 100° C., and with respect to 100 parts by mass of the coolant composition, a content of the mineral oil is 0.01 to 0.4 parts by mass and a content of the silica is 0.003 to 0.1 parts by mass.Type: GrantFiled: June 20, 2017Date of Patent: January 26, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Tomoyuki Nakano, Takato Sakurai, Kazuhito Yaeda, Yoichiro Yoshii, Yosuke Kishino, Masayuki Nagasawa, Shogo Kamenoue
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Patent number: 10883031Abstract: An automotive engine coolant composition includes: a surfactant as a viscosity index improver; a rubber swelling inhibitor; and a base, in which the rubber swelling inhibitor is at least one selected from a compound expressed by a following formula (1) [in the formula, R1 is hydrogen, a methyl group, or an ethyl group] and a compound expressed by a following formula (2) [in the formula, R2 is hydrogen, a methyl group, or an ethyl group], the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C., and a content of the rubber swelling inhibitor is 0.03 parts by mass or more and 0.9 parts by mass or less with respect to 100 parts by mass of the coolant composition.Type: GrantFiled: June 20, 2017Date of Patent: January 5, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Kazuhito Yaeda, Yoichiro Yoshii, Yosuke Kishino, Tomoyuki Nakano, Masayuki Nagasawa, Shogo Kamenoue
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Publication number: 20200308464Abstract: A coolant composition includes a viscosity improving agent and a base. The viscosity improving agent includes at least one nonionic surfactant and at least one anionic surfactant represented by the following Formula (1) of R1O—(R2O)m-SO3M. The base is formed of water and/or at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether. R1 represents a linear or branched alkyl group having 16 to 24 carbon atoms or a linear or branched alkenyl group having 16 to 24 carbon atoms, R2 represents an ethylene group or a propylene group, m represents an average addition molar number of R2O which is a number of 0.5 to 10, and M represents a cation or a hydrogen atom. A shear viscosity of the coolant composition is 8.5 mPa·s or higher at 25° C. and is 2.0 mPa·s or lower at 100° C.Type: ApplicationFiled: April 3, 2017Publication date: October 1, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki KODAMA, Shogo KAMENOUE, Kazuhito YAEDA, Yoichiro YOSHII, Masayuki NAGASAWA
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Publication number: 20200153061Abstract: The present disclosure provides a battery coolant for an electric vehicle that has a low conductivity, a low ion elution performance, a low viscosity at a very low temperature, and a cooling performance equivalent to that of an aqueous coolant composition in a driving temperature range. The present disclosure relates to a battery coolant for an electric vehicle containing at least one kind of carbonates selected from the group consisting of propylene carbonate and butylene carbonate in an amount of 90 mass % or more with respect to a total mass of the coolant and water in an amount of 3 mass % or less with respect to the total mass of the coolant.Type: ApplicationFiled: November 6, 2019Publication date: May 14, 2020Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN CHEMICAL INDUSTRIES CO., LTD.Inventors: Hiroyuki ARAI, Yasuaki KODAMA, Masayuki NAGASAWA, Yoshimichi UMEHARA, Yoichiro YOSHII, Yu SASAKI
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Publication number: 20200040246Abstract: Provided is a coolant composition having not only excellent antifreeze properties and insulation properties but also improved cooling performance.Type: ApplicationFiled: July 3, 2019Publication date: February 6, 2020Inventors: Hiroyuki ARAI, Yasuaki KODAMA, Masayuki NAGASAWA, Tsutomu SAKAI, Hironori SHIRAISHI, Yasumi TAKAHASHI
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Publication number: 20190278883Abstract: There is provided a method of predicting a thermal fatigue life of a mold.Type: ApplicationFiled: March 8, 2018Publication date: September 12, 2019Applicant: Hitachi Metals, Ltd.Inventors: Haruyuki MORI, Masataka SATO, Masayuki NAGASAWA
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Publication number: 20190256757Abstract: The present disclosure provides a coolant composition comprising acetate as a freezing-point depressant, which has low corrosiveness to metal such as aluminum and hardly deteriorates rubber. The present disclosure provides a coolant composition comprising water and acetate, wherein the coolant composition further comprises: an aliphatic polyol compound; an azole compound; at least one selected from phosphoric acid and a salt thereof; at least one selected from carboxylic acid and a salt thereof in an amount of 0.1% to 10% by weight, with respect to the total amount of the coolant composition; at least one selected from a calcium compound, a magnesium compound, and a strontium compound in an amount of 0.0001% to 0.2% by weight in terms of nitrate, with respect to the total amount of the coolant composition; and at least one selected from tartaric acid and a salt thereof in an amount of 0.001% to 1.0% by weight in terms of tartaric acid, with respect to the total amount of the coolant composition.Type: ApplicationFiled: February 11, 2019Publication date: August 22, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasuaki KODAMA, Hiroyuki ARAI, Masayuki NAGASAWA, Yoshimichi UMEHARA, Yousuke KISHINO, Yu SASAKI
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Publication number: 20190194516Abstract: An automotive engine coolant composition includes: a surfactant as a viscosity index improver; a rubber swelling inhibitor; and a base, in which the rubber swelling inhibitor is at least one selected from a compound expressed by a following formula (1) [in the formula, R1 is hydrogen, a methyl group, or an ethyl group] and a compound expressed by a following formula (2) [in the formula, R2 is hydrogen, a methyl group, or an ethyl group], the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C., and a content of the rubber swelling inhibitor is 0.03 parts by mass or more and 0.9 parts by mass or less with respect to 100 parts by mass of the coolant composition.Type: ApplicationFiled: June 20, 2017Publication date: June 27, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki KODAMA, Kazuhito YAEDA, Yoichiro YOSHII, Yosuke KISHINO, Tomoyuki NAKANO, Masayuki NAGASAWA, Shogo KAMENOUE
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Publication number: 20190177591Abstract: An automotive engine coolant composition includes: a non-silicone surfactant; an anti-foaming agent containing a mineral oil and silica; and a base, in which the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C. and 2.0 mm2/s or less at 100° C., and with respect to 100 parts by mass of the coolant composition, a content of the mineral oil is 0.01 to 0.4 parts by mass and a content of the silica is 0.003 to 0.1 parts by mass.Type: ApplicationFiled: June 20, 2017Publication date: June 13, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Shin-Etsu Chemical Co., Ltd.Inventors: Yasuaki KODAMA, Tomoyuki NAKANO, Takato SAKURAI, Kazuhito YAEDA, Yoichiro YOSHII, Yosuke KISHINO, Masayuki NAGASAWA, Shogo KAMENOUE
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Publication number: 20190085230Abstract: A coolant composition includes a viscosity improving agent and a base. The viscosity improving agent includes at least one selected from an anionic surfactant represented by the following Formula (1) of R1O—(R2O)m—SO3M and at least one selected from the group consisting of a cationic surfactant represented by the following Formula (2) and an amphoteric surfactant represented by the following Formula (3) or Formula (4). The base is formed of water and/or at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether, in which a shear viscosity is 8.5 mPa·s or higher at 25° C. and is 2.0 mPa·s or lower at 100° C.Type: ApplicationFiled: April 3, 2017Publication date: March 21, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki KODAMA, Shogo KAMENOUE, Kazuhito YAEDA, Yoichiro YOSHII, Masayuki NAGASAWA
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COOLANT COMPOSITION FOR AUTOMOBILE ENGINE AND CONCENTRATED COOLANT COMPOSITION FOR AUTOMOBILE ENGINE
Publication number: 20190031938Abstract: This invention provides a coolant composition for an automobile engine which achieves retained thickening effects of a surfactant as a viscosity, and a concentrated coolant composition for an automobile engine used to obtain such coolant composition. Such coolant composition for an automobile engine comprises: (A) a silicone-based oil compound; (B) polyether-modified silicone; (C) a non-silicone-based surfactant; and (D) an aqueous base, wherein the silicone-based oil compound (A) comprises: (A1) at least one selected from among organopolysiloxanes represented by General Formula (1); and (A2) a filler, and the polyether-modified silicone (B) is at least one member selected from among polyoxyalkylene-modified organopolysiloxanes represented by General Formula (2).Type: ApplicationFiled: January 23, 2017Publication date: January 31, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SHIN-ETSU CHEMICAL CO., LTD.Inventors: Yasuaki KODAMA, Takato SAKURAI, Kazuhito YAEDA, Yoichiro YOSHII, Ryota MAKINO, Masayuki NAGASAWA -
Patent number: 10160895Abstract: A coolant composition includes: a viscosity improving agent; at least one alkali metal compound selected from the group consisting of alkali metal salts and alkali metal hydroxides; and a base composed of water and/or at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether, wherein the viscosity improving agent is a compound represented by a formula of R1O—(R2O)m—SO3M, where R1 represents a linear or branched alkyl or alkenyl group having 16 to 24 carbon atoms, R2 represents an ethylene group or a propylene group, m represents an average addition molar number of R2O and a number from 0.5 to 10, and M represents a cation or a hydrogen atom, and a kinetic viscosity of the coolant composition is 8.5 mm2/sec or higher at 25° C. and is 2.0 mm2/sec or lower at 100° C.Type: GrantFiled: December 23, 2015Date of Patent: December 25, 2018Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KAO CORPORATION, JAPAN CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasuaki Kodama, Kazuhiro Miyajima, Ryota Makino, Shogo Kamenoue, Shinichi Ogura, Kazuhito Yaeda, Yoichiro Yoshii, Tomoyuki Nakano, Masayuki Nagasawa
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Patent number: 9896768Abstract: The present invention is mainly intended to provide a sealing member which can be easily manufactured and which is capable of sealing with high accuracy and a method of manufacturing the sealing member, wherein the sealing member is a metallic sealing member that is arranged so as to be interposed between a first surface and a second surface which are facing each other. The sealing member is provided with a first protrusion protruded toward the first surface and a pair of second protrusions protruded toward the second surface, wherein the first protrusion is arranged between the paired second protrusions and distal end portions of the first protrusion and second protrusions are mutually parallel flat surfaces.Type: GrantFiled: December 18, 2013Date of Patent: February 20, 2018Assignee: HORIBA STEC, Co., Ltd.Inventors: Tadahiro Yasuda, Masayuki Nagasawa, Shigeyuki Hayashi
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Publication number: 20170369756Abstract: A coolant composition includes: a viscosity improving agent; at least one alkali metal compound selected from the group consisting of alkali metal salts and alkali metal hydroxides; and a base composed of water and/or at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether, wherein the viscosity improving agent is a compound represented by a formula of R1O—(R2O)m—SO3M, where R1 represents a linear or branched alkyl or alkenyl group having 16 to 24 carbon atoms, R2 represents an ethylene group or a propylene group, m represents an average addition molar number of R2O and a number from 0.5 to 10, and M represents a cation or a hydrogen atom, and a kinetic viscosity of the coolant composition is 8.5 mm2/sec or higher at 25° C. and is 2.0 mm2/sec or lower at 100° C.Type: ApplicationFiled: December 23, 2015Publication date: December 28, 2017Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KAO CORPORATION, JAPAN CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasuaki KODAMA, Kazuhiro MIYAJIMA, Ryota MAKINO, Shogo KAMENOUE, Shinichi OGURA, Kazuhito YAEDA, Yoichiro YOSHII, Tomoyuki NAKANO, Masayuki NAGASAWA