Patents by Inventor Tatsuyuki Okada

Tatsuyuki Okada 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).

  • Patent number: 6572050
    Abstract: A winding process for an elastomeric fiber package using a contact roll that exerts variable pressure during the winding to create an elastomeric fiber package with a good package shape. The method including having a high initial force of the contact roll of less than 10 kg, reducing the force to about 25-60% of the initial force during the first 30% of winding time, then holding the force substantially constant until the final 30% of the winding time when the force is reduced to about a final force of 10-35% of the initial force. Wherein the final force is no less than about 1 kg and the package size is at least 4 kg.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: June 3, 2003
    Assignee: Dupont-Toray Co. Ltd.
    Inventors: Tatsuyuki Okada, Hidekazu Iketani