Patents by Inventor Yukio Matsubayashi

Yukio Matsubayashi 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).

  • Bulky non-woven fabric
    Patent number: 4038452
    Abstract: A bulky non-woven fabric of improved softness and uniformity in surface density, flatness and thickness is provided. The non-woven fabric comprises (a) 50 to 95% by weight of spontaneously crimped acrylonitrile polymer fibers having lengths of 4mm to 20mm and at least 20 crimps per inch of length, said acrylonitrile polymer consisting essentially of, in polymerized form, 80 to 100% by weight of acrylonitrile and 0 to 20% by weight of a copolymerizable monoethylenically unsaturated monomer, and (b) 5 to 50% by weight of fibrillated fibers of at least one acrylonitrile polymer, said acrylonitrile polymer comprising, in polymerized form, 60 to 98% by weight of acrylonitrile and 2 to 40% by weight of a copolymerizable monoethylenically unsaturated monomer having a carboxyl group or an amide or N-alkyl substituted amide group.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: July 26, 1977
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tadahiro Kobayashi, Eiichi Wakita, Hideo Fukuda, Yukio Matsubayashi