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:
Jan. 12, 1993
Filed:
Aug. 30, 1991
Applicant:
Inventors:
Bruce G Aitken, Erwin, NY (US);
Robert W Pfitzenmaier, Canisteo, NY (US);
Charles C Smith, Jr, Corning, NY (US);
Assignee:
Corning Incorporated, Corning, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
501-4 ; 501 69 ;
Abstract
A transparent glass-ceramic and an article of cookware formed therefrom. The glass-ceramic has as its primary crystal phase a beta-quartz solid solution, contains an amount of TiO.sub.2 effective as a nucleating agent up to about 6%, and has a color package composed of 50 to 150 ppm Co.sub.3 O.sub.4, 50 to 250 ppm NiO and 400 to 1000 ppm Fe.sub.2 O.sub.3 that provides a burgundy color.