Patents by Inventor Hiroshi Edgawa

Hiroshi Edgawa 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).

  • Multi-component spun yarn
    Patent number: 4219996
    Abstract: Multi-component spun yarn. The surface of an open-end spun yarn (staple fibers) having a small degree of twist is covered with a continuous yarn twisted in the same direction. The length of the continuous yarn is greater than that of the open-end spun yarn. Manufacturing method and apparatus are also disclosed.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: September 2, 1980
    Assignee: Toray Industries, Inc.
    Inventors: Hiroshi Edgawa, Toshinori Fujita, Yasuo Uesugi