Patents by Inventor Akira Kunimatsu

Akira Kunimatsu 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).

  • Electrolytic enrichment method for heavy water
    Patent number: 9890062
    Abstract: An electrolytic enrichment method for heavy water includes enriching heavy water by electrolysis using an alkaline water electrolysis cell including an anode chamber that holds an anode, a cathode chamber that holds a cathode, and a diaphragm.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: February 13, 2018
    Assignee: INDUSTRIE DE NORA S.P.A.
    Inventors: Akiyoshi Manabe, Yoshinori Nishiki, Akira Kunimatsu
  • Method for treating tritium-water-containing raw water
    Patent number: 9818496
    Abstract: The present invention relates to a method for treating tritium water-containing raw water, the method including supplying a part of raw water containing tritium water and alkali water to a circulation tank, mixing the raw water with alkali water in the circulation tank to obtain an electrolyte adjusted so as to have a desired alkali concentration, and continuously electrolyzing the electrolyte while circulating the electrolyte, thereby subjecting the raw water stored in the storage tank to alkali water electrolysis and thus gasifying the raw water. According to the invention, by gasifying tritium water-containing raw water by alkali water electrolysis, the tritium concentration in a tritium-containing hydrogen gas is diluted to 1/1,244 and the tritium water-containing raw water can be reduced in volume.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: November 14, 2017
    Assignee: DE NORA PERMELEC LTD
    Inventors: Akiyoshi Manabe, Masahiro Ohara, Yoshinori Nishiki, Akira Kunimatsu
  • METHOD FOR TREATING TRITIUM-WATER-CONTAINING RAW WATER
    Publication number: 20170206991
    Abstract: The present invention relates to a method for treating tritium water-containing raw water, the method including supplying a part of raw water containing tritium water and alkali water to a circulation tank, mixing the raw water with alkali water in the circulation tank to obtain an electrolyte adjusted so as to have a desired alkali concentration, and continuously electrolyzing the electrolyte while circulating the electrolyte, thereby subjecting the raw water stored in the storage tank to alkali water electrolysis and thus gasifying the raw water. According to the invention, by gasifying tritium water-containing raw water by alkali water electrolysis, the tritium concentration in a tritium-containing hydrogen gas is diluted to 1/1,244 and the tritium water-containing raw water can be reduced in volume.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 20, 2017
    Applicant: De Nora Permelec Ltd.
    Inventors: Akiyoshi MANABE, Masahiro OHARA, Yoshinori NISHIKI, Akira KUNIMATSU
  • ELECTROLYTIC ENRICHMENT METHOD FOR HEAVY WATER
    Publication number: 20160368789
    Abstract: An electrolytic enrichment method for heavy water includes enriching heavy water by electrolysis using an alkaline water electrolysis cell including an anode chamber that holds an anode, a cathode chamber that holds a cathode, and a diaphragm.
    Type: Application
    Filed: July 24, 2014
    Publication date: December 22, 2016
    Inventors: Akiyoshi MANABE, Yoshinori NISHIKI, Akira KUNIMATSU
  • Production apparatus for electro-deposited metal foil, production method of thin plate insoluble metal electrode used in production apparatus for electro-deposited metal foil, and electro-deposited metal foil produced by using production apparatus for electro-deposited metal foil
    Patent number: 8394245
    Abstract: An object of the present invention is to provide a production apparatus for electro-deposited metal foil or the like that can reduce thickness fluctuation of electro-deposited metal foil. To achieve the object, a production apparatus for electro-deposited metal foil or the like in which a cathode and an insoluble anode apart from each other, supplying an electrolytic solution through a gap between the cathode and the anode, making the cathode move along to the insoluble anode, electrodepositing a metal component on an electro-deposition surface of the moving cathode is applied.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 12, 2013
    Assignee: Permelec Electrode Ltd.
    Inventors: Yusuke Ozaki, Akira Kunimatsu
  • Production Apparatus for Electro-Deposited Metal Foil, Production Method of Thin Plate Insoluble Metal Electrode Used in Production Apparatus for Electro-Deposited Metal Foil, and Electro-Deposited Metal Foil Produced by Using Production Apparatus for Electro-Deposited Metal Foil
    Publication number: 20100255334
    Abstract: An object of the present invention is to provide a production apparatus for electro-deposited metal foil or the like that can reduce thickness fluctuation of electro-deposited metal foil. To achieve the object, a production apparatus for electro-deposited metal foil or the like in which a cathode and an insoluble anode apart from each other, supplying an electrolytic solution through a gap between the cathode and the anode, making the cathode move along to the insoluble anode, electrodepositing a metal component on an electro-deposition surface of the moving cathode is applied.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 7, 2010
    Applicant: PERMELEC ELECTRODE LTD.
    Inventors: Yusuke Ozaki, Akira Kunimatsu