Patents by Inventor Erwin K. E. Stanzel

Erwin K. E. Stanzel 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).

  • Sheet heater
    Patent number: 4733057
    Abstract: A wall, floor or ceiling heater comprises a plurality of self regulating, preferably PTC conductive polymer, heater elements each of which is connected to two or more connection elements. The elements are held by a support. In a preferred embodiment the heater elements are positioned parallel to each other, and perpendicular to the connection elements. The support is preferably made from a rigid material which is hinged to allow the heater to be folded or rolled for easy transport.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: March 22, 1988
    Assignee: Raychem Corporation
    Inventors: Erwin K. E. Stanzel, Chester L. Sandberg