Patents by Inventor Yasuaki KODAMA
Yasuaki KODAMA 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: 20240093079Abstract: A coolant composition includes a mineral oil or a synthetic oil and a surfactant, in which a conductivity of the coolant composition is lower than 0.1 ?S/cm, and the surfactant is a nonionic surfactant that is a fatty acid ester having a freezing point of lower than ?15° C. and having a cyclic structure.Type: ApplicationFiled: July 7, 2023Publication date: March 21, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuaki KODAMA
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Publication number: 20240066516Abstract: A method of maintaining a cooling system includes the steps of introducing an ion exchange resin into a cooling path, performing ion cleaning of a coolant in the cooling path with the ion exchange resin, and adding an additive to the cooling path after removing the ion exchange resin from the cooling path.Type: ApplicationFiled: June 9, 2023Publication date: February 29, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuaki KODAMA
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Publication number: 20240032244Abstract: Provided is a cooling system that has a reduced risk of contaminating the circulation path of the insulating coolant composition with water. The cooling system includes an insulating coolant composition, a circulation path through which the coolant composition circulates, an inlet through which the circulation path communicates with an external space, and a fluorine-based resin filter covering the inlet. The rate at which the coolant composition at 25° C. passes through the filter is greater than 1 mL·s?1. The rate at which water at 25° C. passes through the filter is less than or equal to 8×10?5 mL·s?1.Type: ApplicationFiled: May 25, 2023Publication date: January 25, 2024Inventor: Yasuaki KODAMA
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Patent number: 11518923Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property, heat transfer characteristic, and hydrolysis resistance. The embodiment is a coolant composition that includes at least one ketone compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.Type: GrantFiled: July 27, 2020Date of Patent: December 6, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Masao Watanabe, Tomoharu Kataoka, Daisuke Tokozakura
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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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Patent number: 11447678Abstract: This disclosure provides a nonaqueous coolant composition that is excellent in insulation property and heat resistance and has improved heat transfer characteristics. The embodiment is a coolant composition that includes at least one ether compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.Type: GrantFiled: July 27, 2020Date of Patent: September 20, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Masao Watanabe, Tomoharu Kataoka, Daisuke Tokozakura
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Patent number: 11371418Abstract: An internal combustion system capable of exactly determining timing of exchanging a coolant of an engine. The internal combustion system includes an engine, cooling circulation mechanism circulating the coolant containing ethylene glycol to the engine while cooling it, temperature sensor measuring the temperature of the coolant having passed through the engine, and control device. The control device includes a number of cold starts counting unit determining engine cold start and counting the number of cold starts before coolant exchange, an accumulated amount of time measuring unit measuring an accumulated amount of time when the coolant temperature measured by the temperature sensor is a defined temperature or higher before the coolant exchange, and an exchange determination unit determining the need for coolant exchange, when the accumulated amount of time is a defined amount of time or greater and the number of cold starts is a defined number of times or greater.Type: GrantFiled: August 11, 2021Date of Patent: June 28, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuaki Kodama
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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: 20220081602Abstract: An object of the present disclosure is to provide a non-aqueous coolant composition having all of excellent insulation property, cooling capability, and flame resistance. This embodiment is a non-water coolant composition that comprises at least one halogen-based flame retardant selected from a fluorine-based oil and a chlorinated paraffin.Type: ApplicationFiled: July 19, 2021Publication date: March 17, 2022Inventors: Yasuaki KODAMA, Masao WATANABE, Daisuke TOKOZAKURA
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Publication number: 20220056834Abstract: An internal combustion system capable of exactly determining timing of exchanging a coolant of an engine. The internal combustion system includes an engine, cooling circulation mechanism circulating the coolant containing ethylene glycol to the engine while cooling it, temperature sensor measuring the temperature of the coolant having passed through the engine, and control device. The control device includes a number of cold starts counting unit determining engine cold start and counting the number of cold starts before coolant exchange, an accumulated amount of time measuring unit measuring an accumulated amount of time when the coolant temperature measured by the temperature sensor is a defined temperature or higher before the coolant exchange, and an exchange determination unit determining the need for coolant exchange, when the accumulated amount of time is a defined amount of time or greater and the number of cold starts is a defined number of times or greater.Type: ApplicationFiled: August 11, 2021Publication date: February 24, 2022Inventor: Yasuaki KODAMA
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Publication number: 20220033700Abstract: It is an object of the present disclosure to provide a non-aqueous coolant composition that is excellent in insulation property and has improved heat transfer characteristics. The embodiment is a non-water coolant composition that comprises at least one amine compound as a non-aqueous base. The amine compound is at least one selected from the group consisting of an aliphatic amine compound, an aromatic amine compound, an alkanolamine compound, an amido amine compound, an amine oxide compound, a heterocyclic amine compound, and an ether amine compound.Type: ApplicationFiled: June 11, 2021Publication date: February 3, 2022Inventors: Yasuaki KODAMA, Masao WATANABE, Daisuke TOKOZAKURA
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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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Publication number: 20210130672Abstract: This disclosure provides a nonaqueous coolant composition that is excellent in insulation property and heat resistance and has improved heat transfer characteristics. The embodiment is a coolant composition that includes at least one ether compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.Type: ApplicationFiled: July 27, 2020Publication date: May 6, 2021Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
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Publication number: 20210062060Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property, heat transfer characteristic, and rubber compatibility. The embodiment is a coolant composition that includes at least one saturated hydrocarbon compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.Type: ApplicationFiled: July 27, 2020Publication date: March 4, 2021Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
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Publication number: 20210062059Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property and heat transfer characteristic. The embodiment is a coolant composition that includes at least one carboxylic acid ester compound as a nonaqueous base and is substantially free of water.Type: ApplicationFiled: July 27, 2020Publication date: March 4, 2021Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
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Publication number: 20210062062Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property, heat transfer characteristic, and hydrolysis resistance. The embodiment is a coolant composition that includes at least one ketone compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.Type: ApplicationFiled: July 27, 2020Publication date: March 4, 2021Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
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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