Patents by Inventor Kusuo Fujishita

Kusuo Fujishita 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).

  • Polypropylene fibers having improved heat-shrinkability and tenacity
    Patent number: 4560734
    Abstract: Polypropylene fibers having a much improved percentage heat shrinkage and also an improved tenacity are provided, which fibers comprise a polypropylene resin having a density of 0.905 or more, an isotactic pentad ratio of boiling n-heptane-insoluble portion (P.sub.0) of 0.960 or more and a ratio of pentad having two different kinds of configurations (P.sub.2), of 0.002 (0.2%) or less.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: December 24, 1985
    Assignee: Chisso Corporation
    Inventors: Kusuo Fujishita, Hideshi Sakamoto
  • Primary backing of foamed polypropylene tapes and tufted carpets produced from the same
    Patent number: 4482595
    Abstract: A backing for tufted carpets, having improved tufting properties such as a small penetration resistance to tufting needles, a uniform distribution of values of penetration resistance and yet superior intrinsic properties, and a tufted carpet produced from the backing are provided, which backing is produced by weaving polypropylene tape yarns oriented by stretching, these polypropylene tape yarns comprising foamed polypropylene tape yarns having a foam content of 1.0 to 20%.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: November 13, 1984
    Assignees: Chisso Corporation, Japan Polypro Backing Co. Ltd.
    Inventors: Kusuo Fujishita, Hideshi Sakamoto, Tomio Yamazawa, Junichi Yamaguchi