The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 1981
Filed:
Mar. 03, 1978
Harold Ellis, Miami Beach, FL (US);
Alexander De Fonso, Hollywood, FL (US);
Stephen Rosa, Bethesda, MD (US);
Delphic Research Laboratories, Inc., Miami, FL (US);
Abstract
A unitary, composite laminated article comprises an electrically insulating top layer and an electrically insulating bottom layer. Applied to the inner surfaces of each of these layers is a barrier layer substantially impermeable to moisture and water vapor. A substantially continuous electrically conductive layer of substantially uniform thickness is interposed between the barrier layers. The electrically conductive layer is comprised mainly of carbon and is capable of emitting electromagnetic radiation when an electric current is passed therethrough. In contact with the electrically conductive layer is electrical conductor means. The top layer and bottom layer are sealed together to thereby form an enclosed laminate. The electrically conductive layer exhibits very stable resistivity. The use of the article as a radiant heating device and a method for its manufacture are provided. The device is especially useful for personal comfort heating and as a heat source in commercial, residential and industrial establishments.