Patents by Inventor Toshihiro Horikawa

Toshihiro Horikawa 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).

  • Floor coverings having built-in heater
    Patent number: 4620085
    Abstract: A floor covering having a built-in heater which includes a planar sandwich structure including an underlining layer of heat insulating material, at least one heating element provided on one surface of the underlining layer, an electric conductor provided on the one surface of the underlining layer so as to cover the heating element, a surfacing layer overlaying the conductor on one side of the heating element opposite to the underlining layer, and a lead wire for connecting the conductor to ground.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: October 28, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshihiro Horikawa, Nobumori Kuwabara