Patents by Inventor Motoo Fukui

Motoo Fukui 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).

  • Cation exchange membrane selectively permeable to monovalent cations and method for its production
    Patent number: 6569301
    Abstract: The present invention provides a cation exchange membrane which has excellent durability, a high limiting current density, a low direct current membrane resistance and excellent selectivity to monovalent cations. In the present invention, a cation exchange membrane excellent in selective permeability to monovalent cations is produced by bringing high molecular cations into contact with a surface of a cation exchange membrane in the presence of anions of an oxyacid or anions of an organic sulfonic acid.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 27, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshio Sugaya, Motoo Fukui, Yoshiharu Aoki
  • Cation exchange membrane selectively permeable to monovalent cations and method for its production
    Publication number: 20020053511
    Abstract: The present invention provides a cation exchange membrane which has excellent durability, a high limiting current density, a low direct current membrane resistance and excellent selectivity to monovalent cations. In the present invention, a cation exchange membrane excellent in selective permeability to monovalent cations is produced by bringing high molecular cations into contact with a surface of a cation exchange membrane in the presence of anions of an oxyacid or anions of an organic sulfonic acid.
    Type: Application
    Filed: September 28, 2001
    Publication date: May 9, 2002
    Applicant: ASAHI GLASS COMPANY, LTD.
    Inventors: Yoshio Sugaya, Motoo Fukui, Yoshiharu Aoki
  • Dehumidifying method
    Patent number: 5620500
    Abstract: A dehumidifying method which comprises contacting a gas containing water vapor to one side of a vapor permselective membrane, while contacting a dry gas to the other side of the membrane, to let the water vapor selectively permeate through the membrane, wherein the membrane is made of an ion exchange membrane having ion exchange groups, of which counter ions are partly or entirely substituted by metal ions.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: April 15, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Motoo Fukui, Junjiro Iwamoto, Kei Nishii