Patents by Inventor Nozomi KUSUMOTO

Nozomi KUSUMOTO 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: 12188135
    Abstract: A fluorine gas production device includes an electrolytic cell, a partition wall extending downward in the vertical direction from the ceiling surface inside the electrolytic cell to partition the electrolytic cell into an anode chamber and a cathode chamber, an anode, and a cathode. The lower end of the partition wall is immersed in the electrolytic solution and a length in the vertical direction of a portion immersed in the electrolytic solution of the partition wall is from 10% to 30% of the distance from the bottom surface inside the electrolytic cell to the liquid level of the electrolytic solution. The cathode is completely immersed in the electrolytic solution and the upper end of the cathode is arranged at a lower position in the vertical direction relative to the lower end of the partition wall. The anode is partially exposed from the liquid level of the electrolytic solution.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: January 7, 2025
    Assignee: Resonac Corporation
    Inventors: Yohsuke Fukuchi, Nozomi Kusumoto, Hiroshi Kobayashi
  • Publication number: 20220235471
    Abstract: A method for producing fluorine gas including electrolyzing an electrolyte in an electrolytic cell, measuring an electric energy accumulated after the electrolyte is placed in the electrolytic cell, and the electrolyzing is started, and sending a fluid generated in the inside of the electrolytic cell in the electrolyzing the electrolyte, to the outside of the electrolytic cell through a flow path. In the sending, the flow path is switched in accordance with the electric energy measured in the measuring an electric energy, such that the fluid is sent to a first flow path that sends the fluid to a first outside when the electric energy measured in the measuring an electric energy is not less than a predetermined reference value, or the fluid is sent to a second flow path that sends the fluid to a second outside when the electric energy is less than the predetermined reference value.
    Type: Application
    Filed: December 11, 2020
    Publication date: July 28, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Katsumi MIKAMI, Yohsuke FUKUCHI, Nozomi KUSUMOTO
  • Publication number: 20210395901
    Abstract: There is provided a fluorine gas production device in which, even when an electrolytic solution containing hydrogen fluoride is electrolyzed at a high current density, a recombination reaction in the electrolytic solution and a recombination reaction in gas phase parts of an anode chamber and a cathode chamber are less likely to occur and the electrolytic solution can be electrolyzed with high current efficiency to produce fluorine gas. The fluorine gas production device includes an electrolytic cell (1), a partition wall (7) extending downward in the vertical direction from the ceiling surface inside the electrolytic cell (1) to partition the electrolytic cell (1) into an anode chamber (12) and a cathode chamber (14), an anode (3), and a cathode (5).
    Type: Application
    Filed: October 7, 2019
    Publication date: December 23, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Yohsuke FUKUCHI, Nozomi KUSUMOTO, Hiroshi KOBAYASHI
  • Patent number: 11192836
    Abstract: Provided is a method for producing a fluorine-containing organic compound. The method can immediately detect the occurrence of a side reaction in direct fluorination reaction using fluorine gas and can give a highly pure fluorine-containing organic compound at a high yield. A raw material liquid (1) containing a raw material organic compound having a hydrogen atom and two or more carbon atoms is reacted with fluorine gas in a reaction container (11) to replace the hydrogen atom of the raw material organic compound with a fluorine atom to give a fluorine-containing organic compound. In the reaction, tetrafluoromethane contained in a gas phase (2) in the reaction container (11) is continuously measured, and the amount of the fluorine gas supplied to the reaction container (11) is controlled depending on the measured value of the tetrafluoromethane.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: December 7, 2021
    Assignee: SHOWA DENKO K.K.
    Inventors: Yohsuke Fukuchi, Shinichi Yorozuya, Nozomi Kusumoto, Hiroshi Kobayashi
  • Patent number: 10995046
    Abstract: There is provided a method of producing 1,2,3,4-tetrachlorobutane capable of stably and economically producing 1,2,3,4-tetrachlorobutane. A reactant solution (1) containing 3,4-dichloro-1-butene is charged in a reaction vessel (11) having an inner surface, to be brought into contact with the reactant solution (1), made of a metal and a chlorine gas is introduced into the reactant solution (1) to perform a reaction between 3,4-dichloro-1-butene and the chlorine gas to produce 1,2,3,4-tetrachlorobutane. The reaction is performed while carrying out an operation of taking out at least a portion of the reactant solution (1) from the reaction vessel (11), filtering the reactant solution (1) thus taken out to remove a solid matter, and returning the filtered reactant solution (1) into the reaction vessel (11).
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: May 4, 2021
    Assignee: SHOWA DENKO K.K.
    Inventors: Katsumi Mikami, Nozomi Kusumoto, Shinya Oguro, Yohsuke Fukuchi
  • Publication number: 20200346997
    Abstract: There is provided a method of producing 1,2,3,4-tetrachlorobutane capable of stably and economically producing 1,2,3,4-tetrachlorobutane. A reactant solution (1) containing 3,4-dichloro-1-butene is charged in a reaction vessel (11) having an inner surface, to be brought into contact with the reactant solution (1), made of a metal and a chlorine gas is introduced into the reactant solution (1) to perform a reaction between 3,4-dichloro-1-butene and the chlorine gas to produce 1,2,3,4-tetrachlorobutane. The reaction is performed while carrying out an operation of taking out at least a portion of the reactant solution (1) from the reaction vessel (11), filtering the reactant solution (1) thus taken out to remove a solid matter, and returning the filtered reactant solution (1) into the reaction vessel (11).
    Type: Application
    Filed: October 11, 2018
    Publication date: November 5, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Katsumi MIKAMI, Nozomi KUSUMOTO, Shinya OGURO, Yohsuke FUKUCHI
  • Publication number: 20200346998
    Abstract: Provided is a method for producing a fluorine-containing organic compound. The method can immediately detect the occurrence of a side reaction in direct fluorination reaction using fluorine gas and can give a highly pure fluorine-containing organic compound at a high yield. A raw material liquid (1) containing a raw material organic compound having a hydrogen atom and two or more carbon atoms is reacted with fluorine gas in a reaction container (11) to replace the hydrogen atom of the raw material organic compound with a fluorine atom to give a fluorine-containing organic compound. In the reaction, tetrafluoromethane contained in a gas phase (2) in the reaction container (11) is continuously measured, and the amount of the fluorine gas supplied to the reaction container (11) is controlled depending on the measured value of the tetrafluoromethane.
    Type: Application
    Filed: November 7, 2018
    Publication date: November 5, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Yohsuke FUKUCHI, Shinichi YOROZUYA, Nozomi KUSUMOTO, Hiroshi KOBAYASHI