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:
Jul. 08, 1980
Filed:
Feb. 02, 1979
Applicant:
Inventors:
Francis A Cantaloupe, Horseheads, NY (US);
Robert W Colegrove, Lawrenceville, PA (US);
John E Megles, Jr, Corning, NY (US);
Hermann L Rittler, Corning, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
428410 ; 106 397 ;
Abstract
This invention relates to the production of essentially transparent glass-ceramic sheet useful as surfaces for smoothtop cooking stoves which will display a warm brown coloration sufficiently dark to conceal the heating element when not in use, but permitting visible observation thereof when in operation. The products consist essentially, on an analyzed basis, of 2.5-4.5% Li.sub.2 O, 1-2% MgO, 1-2% ZnO, 19.5-21% Al.sub.2 O.sub.3, 66.5-68% SiO.sub.2, 4-5% TiO.sub.2, and 0.02-0.2% V.sub.2 O.sub.5.