Patents by Inventor Tsunehiko Naganuma

Tsunehiko Naganuma 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).

  • Separation membrane module with hollow fiber and a method of making the same
    Patent number: 7291204
    Abstract: A separation membrane module having hollow fibers, wherein a plurality of hollow fibers are heated and melted to bond and thermally fuse the external surfaces of the hollow fibers with each other; and a method of manufacturing a separation membrane module having hollow fibers whereby the ends of a plurality of hollow fibers are inserted into a sheath, the sheath and the hollow fibers are tightly bonded together to form spaces, and the sheath portion into which hollow fibers have been inserted is heated up to the temperature at which the surfaces of the hollow fibers melt, with the spaces thus formed kept in a decompressed state, so that the exterior surfaces of the hollow fibers are thermally fused and integrated together.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: November 6, 2007
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Masahiro Suzuki, Tsunehiko Naganuma
  • Separation membrane module with hollow fiber and a method of making the same
    Publication number: 20040020845
    Abstract: A separation membrane module having hollow fibers, wherein a plurality of hollow fibers are heated and melted to bond and thermally fuse the external surfaces of the hollow fibers with each other; and a method of manufacturing a separation membrane module having hollow fibers whereby the ends of a plurality of hollow fibers are inserted into a sheath, the sheath and the hollow fibers are tightly bonded together to form spaces, and the sheath portion into which hollow fibers have been inserted is heated up to the temperature at which the surfaces of the hollow fibers melt, with the spaces thus formed kept in a decompressed state, so that the exterior surfaces of the hollow fibers are thermally fused and integrated together.
    Type: Application
    Filed: June 5, 2003
    Publication date: February 5, 2004
    Inventors: Masahiro Suzuki, Tsunehiko Naganuma