Patents by Inventor Masaaki Tsuzaki
Masaaki Tsuzaki 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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Patent number: 11401486Abstract: There is provided a solvent composition which is a stable solvent composition which is excellent in solubility of various organic substances, has a sufficient drying property, and has no adverse effect on a global environment, is stabilized not to decompose, and moreover suppresses metal corrosion under coexistence with metal, and which can be used without having an adverse effect on articles of various materials such as metal, plastic, and elastomer in a wide range of industrial uses such as cleaning and dilution coating uses. A solvent composition including: a solvent (A) including (D-1-chloro-3,3,3-trifluoro-1-propene; and a stabilizer (B) consisting of HCFC whose boiling point at normal pressure is not lower than 30° C. nor higher than 60° C.Type: GrantFiled: September 18, 2020Date of Patent: August 2, 2022Assignee: AGC Inc.Inventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
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Publication number: 20210002590Abstract: There is provided a solvent composition which is a stable solvent composition which is excellent in solubility of various organic substances, has a sufficient drying property, and has no adverse effect on a global environment, is stabilized not to decompose, and moreover suppresses metal corrosion under coexistence with metal, and which can be used without having an adverse effect on articles of various materials such as metal, plastic, and elastomer in a wide range of industrial uses such as cleaning and dilution coating uses. A solvent composition including: a solvent (A) including (D-1-chloro-3,3,3-trifluoro-1-propene; and a stabilizer (B) consisting of HCFC whose boiling point at normal pressure is not lower than 30° C. nor higher than 60° C.Type: ApplicationFiled: September 18, 2020Publication date: January 7, 2021Applicant: AGC Inc.Inventors: Masahiko NAKAMURA, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
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Publication number: 20200346999Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: July 22, 2020Publication date: November 5, 2020Applicant: AGC INC.Inventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
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Patent number: 10815452Abstract: There is provided a solvent composition which is a stable solvent composition which is excellent in solubility of various organic substances, has a sufficient drying property, and has no adverse effect on a global environment, is stabilized not to decompose, and moreover suppresses metal corrosion under coexistence with metal, and which can be used without having an adverse effect on articles of various materials such as metal, plastic, and elastomer in a wide range of industrial uses such as cleaning and dilution coating uses. A solvent composition including: a solvent (A) including (Z)-1-chloro-3,3,3-trifluoro-1-propene; and a stabilizer (B) consisting of HCFC whose boiling point at normal pressure is not lower than 30° C. nor higher than 60° C.Type: GrantFiled: March 5, 2018Date of Patent: October 27, 2020Assignee: AGC Inc.Inventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
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Patent number: 10759725Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: September 6, 2019Date of Patent: September 1, 2020Assignee: AGC INC.Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20200002254Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: September 6, 2019Publication date: January 2, 2020Applicant: AGC INC.Inventors: Masato FUKUSHIMA, Masaaki Tsuzaki, Maki Shigematsu
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Patent number: 10442745Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: March 25, 2019Date of Patent: October 15, 2019Assignee: AGC INC.Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20190218163Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: March 25, 2019Publication date: July 18, 2019Applicant: AGC INC.Inventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
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Patent number: 10280129Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: September 28, 2017Date of Patent: May 7, 2019Assignee: AGC Inc.Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20180187134Abstract: There is provided a solvent composition which is a stable solvent composition which is excellent in solubility of various organic substances, has a sufficient drying property, and has no adverse effect on a global environment, is stabilized not to decompose, and moreover suppresses metal corrosion under coexistence with metal, and which can be used without having an adverse effect on articles of various materials such as metal, plastic, and elastomer in a wide range of industrial uses such as cleaning and dilution coating uses. A solvent composition including: a solvent (A) including (Z)-1-chloro-3,3,3-trifluoro-1-propene; and a stabilizer (B) consisting of HCFC whose boiling point at normal pressure is not lower than 30° C. nor higher than 60° C.Type: ApplicationFiled: March 5, 2018Publication date: July 5, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
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Publication number: 20180016213Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: September 28, 2017Publication date: January 18, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masato Fukushima, Masaaki TSUZAKI, Maki SHIGEMATSU
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Patent number: 9809516Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: April 5, 2017Date of Patent: November 7, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Patent number: 9758456Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: June 17, 2016Date of Patent: September 12, 2017Assignee: Asahi Glass Company, LimitedInventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20170204029Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: April 5, 2017Publication date: July 20, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masato FUKUSHIMA, Masaaki Tsuzaki, Maki Shigematsu
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Patent number: 9638371Abstract: To provide a method for storing trifluoroethylene filled in a container for storage, transportation, etc., stably without causing a reaction such as polymerization. The method is characterized in that trifluoroethylene is stored in a sealed container in such a state that a gas phase and a liquid phase coexist, and in the gas phase, the concentration of oxygen at a temperature of 25° C. is kept to be at most 1,000 ppm by volume.Type: GrantFiled: January 14, 2016Date of Patent: May 2, 2017Assignee: Asahi Glass Company, LimitedInventors: Masaaki Tsuzaki, Masato Fukushima, Maki Shigematsu
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Publication number: 20160289148Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: ApplicationFiled: June 17, 2016Publication date: October 6, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
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Patent number: 9428430Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.Type: GrantFiled: October 27, 2014Date of Patent: August 30, 2016Assignee: Asahi Glass Company, LimitedInventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
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Publication number: 20160123534Abstract: To provide a method for storing trifluoroethylene filled in a container for storage, transportation, etc., stably without causing a reaction such as polymerization. The method is characterized in that trifluoroethylene is stored in a sealed container in such a state that a gas phase and a liquid phase coexist, and in the gas phase, the concentration of oxygen at a temperature of 25° C. is kept to be at most 1,000 ppm by volume.Type: ApplicationFiled: January 14, 2016Publication date: May 5, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Masaaki Tsuzaki, Masato Fukushima, Maki Shigematsu
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Patent number: 9193649Abstract: There is provided a method and an apparatus for efficiently obtaining 2,3,3,3-tetrafluoropropene with low contents of both organic impurities and water. The method for continuously purifying crude 2,3,3,3-tetrafluoropropene containing water and one or more organic impurities, the method including using an apparatus having a distillation column with X stages (3?X, the stage closest to a column top is the first stage) and a unit for cooling and condensing a distillate; supplying the crude 2,3,3,3-tetrafluoropropene to an m-th stage (n+1?m?X, 2?n?X?1) of the distillation column, recirculating at least part of the distillate cooled and condensed in the unit for cooling and condensing to an h-th stage (1?h?n?1) of the distillation column; and taking out a liquid phase part of an n-th stage of the distillation column to obtain a purified product of 2,3,3,3-tetrafluoropropene.Type: GrantFiled: June 16, 2014Date of Patent: November 24, 2015Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Satoshi Kawaguchi, Hirokazu Takagi, Masaaki Tsuzaki, Masato Fukushima, Hidekazu Okamoto
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Publication number: 20150240089Abstract: It is an object of the present invention to provide a stable solvent composition which provides excellent solubility of various organic substances, has sufficient drying property and has no adverse influences on global environment and is stabilized and not decomposed, and which can be used without adversely affecting objects made of various materials such as metal, plastic or elastomer, for a wide range of industrial use such as cleaning or coating. A solvent composition comprising a solvent containing 1,1-dichloro-2,3,3,3-tetrafluoropropene, and at least one stabilizer selected from the group consisting of a phenol, an ether, an epoxide and an amine.Type: ApplicationFiled: April 28, 2015Publication date: August 27, 2015Applicant: Asahi Glass Company, LimitedInventors: Hiroaki MITSUOKA, Masaaki Tsuzaki