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:
Oct. 03, 1974
Applicant:
Inventor:
Gerd Muller, Mainz-Weisenau, DT;
Assignee:
Jenaer Glaswerk Schott & Gen., Mainz, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
106 397 ; 106 398 ; 106 52 ;
Abstract
Colorless, transparent glass ceramic with a linear thermal expansion which is smaller than 15 .times. 70.sup.-.sup.7 /.degree.C in the temperature range from 20.degree. to 300.degree.C, produced from a glass, which has been melted and shaped and thereafter subjected to a heat treatment for the controlled crystallization of innumerable, irregularly oriented, minute crystals of the structural type of .beta.-quartz, characterized in that it has, to at least 85% by weight, the following composition based on oxides: