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).

  • Patent number: 11401486
    Abstract: 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: Grant
    Filed: September 18, 2020
    Date of Patent: August 2, 2022
    Assignee: AGC Inc.
    Inventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
  • Publication number: 20210002590
    Abstract: 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: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: AGC Inc.
    Inventors: Masahiko NAKAMURA, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
  • Publication number: 20200346999
    Abstract: 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: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Applicant: AGC INC.
    Inventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
  • Patent number: 10815452
    Abstract: 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: Grant
    Filed: March 5, 2018
    Date of Patent: October 27, 2020
    Assignee: AGC Inc.
    Inventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
  • Patent number: 10759725
    Abstract: 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: Grant
    Filed: September 6, 2019
    Date of Patent: September 1, 2020
    Assignee: AGC INC.
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20200002254
    Abstract: 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: Application
    Filed: September 6, 2019
    Publication date: January 2, 2020
    Applicant: AGC INC.
    Inventors: Masato FUKUSHIMA, Masaaki Tsuzaki, Maki Shigematsu
  • Patent number: 10442745
    Abstract: 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: Grant
    Filed: March 25, 2019
    Date of Patent: October 15, 2019
    Assignee: AGC INC.
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20190218163
    Abstract: 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: Application
    Filed: March 25, 2019
    Publication date: July 18, 2019
    Applicant: AGC INC.
    Inventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
  • Patent number: 10280129
    Abstract: 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: Grant
    Filed: September 28, 2017
    Date of Patent: May 7, 2019
    Assignee: AGC Inc.
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20180187134
    Abstract: 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: Application
    Filed: March 5, 2018
    Publication date: July 5, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masahiko Nakamura, Hidekazu Okamoto, Masaaki Tsuzaki, Hiroaki Mitsuoka, Satoko Itoh
  • Publication number: 20180016213
    Abstract: 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: Application
    Filed: September 28, 2017
    Publication date: January 18, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masato Fukushima, Masaaki TSUZAKI, Maki SHIGEMATSU
  • Patent number: 9809516
    Abstract: 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: Grant
    Filed: April 5, 2017
    Date of Patent: November 7, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Patent number: 9758456
    Abstract: 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: Grant
    Filed: June 17, 2016
    Date of Patent: September 12, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20170204029
    Abstract: 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: Application
    Filed: April 5, 2017
    Publication date: July 20, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masato FUKUSHIMA, Masaaki Tsuzaki, Maki Shigematsu
  • Patent number: 9638371
    Abstract: 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: Grant
    Filed: January 14, 2016
    Date of Patent: May 2, 2017
    Assignee: Asahi Glass Company, Limited
    Inventors: Masaaki Tsuzaki, Masato Fukushima, Maki Shigematsu
  • Publication number: 20160289148
    Abstract: 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: Application
    Filed: June 17, 2016
    Publication date: October 6, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masato FUKUSHIMA, Masaaki TSUZAKI, Maki SHIGEMATSU
  • Patent number: 9428430
    Abstract: 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: Grant
    Filed: October 27, 2014
    Date of Patent: August 30, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20160123534
    Abstract: 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: Application
    Filed: January 14, 2016
    Publication date: May 5, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masaaki Tsuzaki, Masato Fukushima, Maki Shigematsu
  • Patent number: 9193649
    Abstract: 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: Grant
    Filed: June 16, 2014
    Date of Patent: November 24, 2015
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Satoshi Kawaguchi, Hirokazu Takagi, Masaaki Tsuzaki, Masato Fukushima, Hidekazu Okamoto
  • Publication number: 20150240089
    Abstract: 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: Application
    Filed: April 28, 2015
    Publication date: August 27, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroaki MITSUOKA, Masaaki Tsuzaki