Patents by Inventor Eizou Sakurai

Eizou Sakurai 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).

  • Acrylic based composite fiber and method for production thereof, and fiber composite using the same
    Patent number: 6866931
    Abstract: An object of this invention is to provide an acrylonitrile based composite fiber having a new feeling different from that of an ordinary cellulose acetate fiber, cellulose fiber and acrylic fiber, excellent spinability, fiber properties and process ability of yarn spinning, and excellent functions, in particular, a deodorizing function and a moisture absorbing and retaining property. The composite fiber is comprised of 10 to 40% by weight of cellulose acetate and/or cellulose and 60 to 90% by weight of an acrylonitrile based polymer, and has a structure with the cellulose acetate and/or cellulose forming an island component in a cross section perpendicular to a fiber axis and the acrylonitrile based polymer forming a sea component.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: March 15, 2005
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Satoru Takeuchi, Masakazu Hoshino, Ryo Ochi, Yukio Kasabou, Eizou Sakurai, Masanori Akasaka
  • Acrylic based composite fiber and method for production thereof, and fiber composite using the same
    Publication number: 20040175565
    Abstract: An object of this invention is to provide an acrylonitrile based composite fiber having a new feeling different from that of an ordinary cellulose acetate fiber, cellulose fiber and acrylic fiber, excellent spinability, fiber properties and process ability of yarn spinning, and excellent functions, in particular, a deodorizing function and a moisture absorbing and retaining property.
    Type: Application
    Filed: January 12, 2004
    Publication date: September 9, 2004
    Inventors: Satoru Takeuchi, Masakazu Hoshino, Ryo Ochi, Yukio Kasabou, Eizou Sakurai, Masanori Akasaka
  • Acrylic composite fiber and method for production thereof, and fiber composite using the same
    Publication number: 20040170835
    Abstract: An object of this invention is to provide an acrylonitrile based composite fiber having a new feeling different from that of an ordinary cellulose acetate fiber, cellulose fiber and acrylic fiber, excellent spinability, fiber properties and process ability of yarn spinning, and excellent functions, in particular, a deodorizing function and a moisture absorbing and retaining property.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Applicant: Mitsubishi Rayon co., Ltd.
    Inventors: Satoru Takeuchi, Masakazu Hoshino, Ryo Ochi, Yukio Kasabou, Eizou Sakurai, Masanori Akasaka
  • Floppy disk
    Patent number: 5955169
    Abstract: A floppy disk in which the binder for fixing a magnetic substance in the recording layer of the magnetic disk is a polyester polyurethane and the liner of the jacket contains an acrylic fiber and in addition a fiber treating agent having a surface tension in a specific range. The floppy disk is excellent in workability, can be prepared in high yields because the number of dusts generated upon its preparation is small, and also is excellent in the permanence of recording performance.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: September 21, 1999
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Masakazu Hoshino, Eizou Sakurai, Hajime Itoh, Kunio Iwase, Toshio Nagasaka