Patents by Inventor Kyoji Muraoka

Kyoji Muraoka 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).

  • Patent number: 6294268
    Abstract: The present invention relates to a multi-layer laminate comprising at least two layers of an oriented ultra-high molecular polyolefin layer and a thermoplastic resin layer. The multi-layer laminate exhibits excellent abrasion resistance, tensile strength, shock resistance, heat-sealing property, uniformity in the film thickness, and can be efficiently produced. The invention is further concerned with a process and an apparatus for producing the multi-layer laminate.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: September 25, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kyoji Muraoka, Iwatoshi Suzuki, Toshimasa Takata
  • Patent number: 5403638
    Abstract: A flocked member having a base and a flock and characterized in that the flock is formed by filaments comprising a resin composition (E) or yarns comprising the filament, the resin composition (E) comprising per 100 parts by weight thereof:(1) 90 to 2 parts byweight of a modified polyethylene composition (C) in the form of a mixture which includes 90 to 10 wt. % of a ultra-high-molecular-weight polyethylene (A) having an intrisic viscosity (.eta.) of at least 6 dl/g, and 10 to 90 wt. % of a polyethylene (B) having an intrinsic viscosity (.eta.) of 0.1 to 5 dl/g, at least one of the polyethylene (A) and the polyethylene (B) having been modified with at least one modifying monomer sclected from among unsaturated carboxylic acids and derivatives thereof, and(2) 10 to 98 parts by weight of a polyamide (D).
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: April 4, 1995
    Assignees: Mitsui Petrochemical Industries, Ltd., Gunze Limited
    Inventors: Hirofumi Yanagizawa, Katsuhiko Oikawa, Atsushi Okada, Kyoji Muraoka, Naoki Morozumi, Haruo Kamiya