Patents by Inventor Toshio Nishitani

Toshio Nishitani 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).

  • Melt spinning pack and synthetic fiber manufacturing method
    Patent number: 6284174
    Abstract: A melt spinning pack, including a pack case, a spinneret having many spinning holes positioned at the bottom of the case, a pack cap having a polymer introducing hole at the center positioned at the top of the case, and a flow arranging plate having many flow arranging holes with restricted portions reduced in cross sectional area compared to the inlets of the holes positioned between the spinneret and the pack cap, satisfying the requirement that the contraction percentage R be 50% or less, respectively contained in the case.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: September 4, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Kunihiko Ueda, Toshio Nishitani, Hiroki Furuta, Teruaki Saijo, Kanji Saito, Hiroshi Kato, Hiroshi Ohtani, Shinji Shimizu, Koji Hashimoto