Patents by Inventor Tsuneo Okawahara

Tsuneo Okawahara 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).

  • Two-way stretch fabric and method for the preparation thereof
    Patent number: 5102724
    Abstract: A lengthwise and crosswise stretchable fabric comprising bicomponent polyester filaments produced by conjugate spinning in side-by-side relationship component (A), a polyethylene terephthalate copolymerized with a structural unit having a metal sulfonate group, and component (B), a polyethylene terephthalate or polybutylene terephthalate. The fabric is rendered stretchable by inducting crimps in the bicomponent filaments thereof through exposure to infrared rays while said filaments are in a relaxed condition. The filaments may have been mechanically crimped prior to being formed into the fabric.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: April 7, 1992
    Assignee: Kanebo, Ltd.
    Inventors: Tsuneo Okawahara, Yugoro Masuda