Patents by Inventor Shigeko Hanari

Shigeko Hanari 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).

  • Heating soft floor mat
    Patent number: 4817707
    Abstract: A heating soft floor mat is described comprising a base sheet composed of a thermoplastic resin foamed article as a heat insulating layer having meanderingly formed thereon grooves for conduits, conduits for heating medium disposed in the grooves, and cover material having flexibility covering the surface side thereof, wherein the thermoplastic resin foamed article is a crosslinked polyethylene foamed article containing closed cells having a degree of expansion of from 10 to 40 and the conduits are composed of low density crosslinked polyethylene having a density of less than 0.910 g/cm.sup.3.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: April 4, 1989
    Assignees: Ryowa Corporation, Tokyo Gas Co., Ltd.
    Inventors: Kazuo Aoyama, Yukitaka Murata, Kiyoshi Hattori, Akio Okamoto, Kiyoshi Takahashi, Takashi Sasaki, Shigeko Hanari