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).

  • Patent number: 11459938
    Abstract: 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: Grant
    Filed: December 16, 2021
    Date of Patent: October 4, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki Kodama, Yoichiro Yoshii, Masayuki Nagasawa, Shinichi Ogura
  • Patent number: 11447678
    Abstract: 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: Grant
    Filed: July 27, 2020
    Date of Patent: September 20, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki Kodama, Masao Watanabe, Tomoharu Kataoka, Daisuke Tokozakura
  • Patent number: 11371418
    Abstract: 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: Grant
    Filed: August 11, 2021
    Date of Patent: June 28, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuaki Kodama
  • Publication number: 20220195911
    Abstract: 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: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Inventors: Yasuaki KODAMA, Yoichiro YOSHII, Masayuki NAGASAWA, Shinichi OGURA
  • Publication number: 20220081602
    Abstract: 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: Application
    Filed: July 19, 2021
    Publication date: March 17, 2022
    Inventors: Yasuaki KODAMA, Masao WATANABE, Daisuke TOKOZAKURA
  • Publication number: 20220056834
    Abstract: 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: Application
    Filed: August 11, 2021
    Publication date: February 24, 2022
    Inventor: Yasuaki KODAMA
  • Publication number: 20220033700
    Abstract: 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: Application
    Filed: June 11, 2021
    Publication date: February 3, 2022
    Inventors: Yasuaki KODAMA, Masao WATANABE, Daisuke TOKOZAKURA
  • Patent number: 11108102
    Abstract: 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: Grant
    Filed: November 6, 2019
    Date of Patent: August 31, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Arai, Yasuaki Kodama, Masayuki Nagasawa, Yoshimichi Umehara, Yoichiro Yoshii, Yu Sasaki
  • Publication number: 20210130672
    Abstract: 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: Application
    Filed: July 27, 2020
    Publication date: May 6, 2021
    Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
  • Publication number: 20210062060
    Abstract: 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: Application
    Filed: July 27, 2020
    Publication date: March 4, 2021
    Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
  • Publication number: 20210062062
    Abstract: 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: Application
    Filed: July 27, 2020
    Publication date: March 4, 2021
    Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
  • Publication number: 20210062059
    Abstract: 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: Application
    Filed: July 27, 2020
    Publication date: March 4, 2021
    Inventors: Yasuaki KODAMA, Masao WATANABE, Tomoharu KATAOKA, Daisuke TOKOZAKURA
  • Patent number: 10913883
    Abstract: 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: Grant
    Filed: April 3, 2017
    Date of Patent: February 9, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki Kodama, Shogo Kamenoue, Kazuhito Yaeda, Yoichiro Yoshii, Masayuki Nagasawa
  • Patent number: 10899952
    Abstract: 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: Grant
    Filed: June 20, 2017
    Date of Patent: January 26, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki Kodama, Tomoyuki Nakano, Takato Sakurai, Kazuhito Yaeda, Yoichiro Yoshii, Yosuke Kishino, Masayuki Nagasawa, Shogo Kamenoue
  • Patent number: 10883031
    Abstract: 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: Grant
    Filed: June 20, 2017
    Date of Patent: January 5, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki Kodama, Kazuhito Yaeda, Yoichiro Yoshii, Yosuke Kishino, Tomoyuki Nakano, Masayuki Nagasawa, Shogo Kamenoue
  • Publication number: 20200308464
    Abstract: 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: Application
    Filed: April 3, 2017
    Publication date: October 1, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki KODAMA, Shogo KAMENOUE, Kazuhito YAEDA, Yoichiro YOSHII, Masayuki NAGASAWA
  • Publication number: 20200153061
    Abstract: 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: Application
    Filed: November 6, 2019
    Publication date: May 14, 2020
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN CHEMICAL INDUSTRIES CO., LTD.
    Inventors: Hiroyuki ARAI, Yasuaki KODAMA, Masayuki NAGASAWA, Yoshimichi UMEHARA, Yoichiro YOSHII, Yu SASAKI
  • Publication number: 20200040246
    Abstract: Provided is a coolant composition having not only excellent antifreeze properties and insulation properties but also improved cooling performance.
    Type: Application
    Filed: July 3, 2019
    Publication date: February 6, 2020
    Inventors: Hiroyuki ARAI, Yasuaki KODAMA, Masayuki NAGASAWA, Tsutomu SAKAI, Hironori SHIRAISHI, Yasumi TAKAHASHI
  • Publication number: 20190256757
    Abstract: 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: Application
    Filed: February 11, 2019
    Publication date: August 22, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN CHEMICAL INDUSTRIES CO., LTD.
    Inventors: Yasuaki KODAMA, Hiroyuki ARAI, Masayuki NAGASAWA, Yoshimichi UMEHARA, Yousuke KISHINO, Yu SASAKI
  • Publication number: 20190194516
    Abstract: 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: Application
    Filed: June 20, 2017
    Publication date: June 27, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuaki KODAMA, Kazuhito YAEDA, Yoichiro YOSHII, Yosuke KISHINO, Tomoyuki NAKANO, Masayuki NAGASAWA, Shogo KAMENOUE