Patents by Inventor Yasuo Tango

Yasuo Tango 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 preparation of discontinuous filament bundles and sharp-ended filaments
    Patent number: 4583266
    Abstract: A process for the preparation of discontinuous filament bundles, which comprises applying a drawing force and/or a shearing force to a bundle of continuous filaments while or immediately after contacting the bundle of continuous filaments with a medium maintained at a temperature lower than -5.degree. C. to cut the respective single filaments constituting the bundle. The individual filaments of the resultant bundle may have on at least one terminal thereof a sharp end cut obliquely and an inclination angle .alpha. of the cut top end to the filament axis of less than 70.degree..
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: April 22, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yasuo Tango, Makoto Kanazaki