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. 15, 1980
Filed:
Jan. 17, 1979
Applicant:
Inventors:
Kenneth Chyung, Painted Post, NY (US);
John E Megles, Jr, Corning, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
106 397 ; 65 33 ; 106 398 ; 106 52 ; 106 53 ; 106 54 ;
Abstract
Glasses in the Li.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2 -MgO-ZnO-TiO.sub.2 composition field, additionally containing PbO and/or one of B.sub.2 O.sub.3, Na.sub.2 O and P.sub.2 O.sub.5 are rapidly crystallized to beta-spodumene glass-ceramics at temperatures not exceeding 1000.degree. C. to provide white, opaque glass-ceramic products exhibiting both low thermal expansion and good chemical durability.