Patents by Inventor Iemi Nakazawa

Iemi Nakazawa 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).

  • Planar resistance heating element
    Patent number: 4628187
    Abstract: A planar resistance heating element with positive temperature coefficient characteristics includes a resistive body layer formed of a crystalline resin containing electrically conductive particles and disposed between at least a pair of electrodes on an insulating substrate. A phenolic resin layer or a denatured phenolic resin layer with an elastomer resin added is disposed on the resistive body layer in covering relation to the entire surface thereof. An insulating protective film of resin may be disposed on the covering layer with an adhesive layer interposed therebetween, and an adhesive layer may be disposed on an outer surface of the insulating protective film for attachment to an object to be heated.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: December 9, 1986
    Assignee: Tokyo Cosmos Electric Co., Ltd.
    Inventors: Tsugio Sekiguchi, Noboru Sato, Hiroki Igarashi, Akiyoshi Ozawa, Iemi Nakazawa