Patents by Inventor Yoshihisa Dammoto

Yoshihisa Dammoto 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).

  • Potential bulky polyester associated bundles for woven or knitted fabric and process for production thereof
    Patent number: 4965919
    Abstract: Potential bulky polyester associated bundles or yarns for woven or knitted fabric include spontaneously heat extensible multi-filament A and heat shrinkable multi-filament B. The associated bundles are interlaced at 20-100 interlaces/m. For multi-filament A, the following physical properties apply: <3 denier as a single bundle; 20-80% denier ratio content in associated bundles, wet shrinkage at 100.degree. C. (SHW (A))=0-5%, dry shrinkage at 160.degree. C. (SHD (A))=-15-0%. The properties pertaining to multi-filament B include: fracture tenacity>4 g/denier, denier ratio of 80-29% content in associated bundles, SHW (B)>5-60%. Additionally, SHD (B)-SHD(A)>5%. The invention also relates to processes for forming the bundles and for weaving the bundles into fabric.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: October 30, 1990
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Takayoshi Fujita, Hisao Nishinaka, Michio Ohota, Yoshihisa Dammoto, Shigeo Nagira