Patents by Inventor Takenobu Hasebe

Takenobu Hasebe 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).

  • Process for producing preoxidized fiber spun yarns
    Patent number: 4304746
    Abstract: A process for producing preoxidized fiber spun yarns is described comprising subjecting an acrylonitrile fiber tow to a preoxidation, applying a surface active agent, stretch cutting without crimping, crimping to form slivers, processing in a gilling step, and spinning; according to this process, short fibers and powders of fibers are formed to a lesser extent, and nebs, slubs and flies, etc. are caused to a lesser extent, and preoxidized fiber spun yarns having high quality are obtained in a high yield.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 8, 1981
    Assignee: Toho Beslon Co., Ltd.
    Inventors: Kozo Yamada, Takenobu Hasebe, Kazuhisa Saito