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:
Aug. 31, 1976
Filed:
Sep. 19, 1975
Applicant:
Inventors:
Paul L Rose, Corning, NY (US);
William P Whitney, Big Flats, NY (US);
Thomas Williams, Corning, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219543 ; 338308 ; 427125 ;
Abstract
An electrical heating unit of the integral element type, comprising an electrical heating element indirectly bonded to a supporting beta quartz-zinc petalite glass-ceramic plate is described. A semicrystalline zinc aluminosilicate coating is provided between the glass-ceramic plate and the heating element, to improve the adherence and stabilize the resistance of the element and to protect the plate from deterioration during and subsequent to the bonding of the integral heating element to the unit.