Patents by Inventor Tuneo Hanada

Tuneo Hanada 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).

  • Polyester filament having excellent antistatic properties and process for preparing the same
    Patent number: 4035441
    Abstract: A polyester filament in which a polyether-polyester block copolymer is dispersed as fine striae along the filament axis, at least one of which is substantially endless. Process for preparing the same includes a melt spinning apparatus with static mixing elements interposed between separate molten polymer feed passageways and spinneret holes.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: July 12, 1977
    Assignee: Toray Industries, Inc.
    Inventors: Tadakazu Endo, Masanori Takeuchi, Tuneo Hanada, Kiyoshi Nakagawa, Hideo Komatsu, Itaru Nakamura