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:
Mar. 06, 2001
Filed:
Feb. 26, 1998
Josef C. Lapp, Corning, NY (US);
Chad B. Moore, Corning, NY (US);
Linda R. Pinckney, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A glass-ceramic material which exhibits extremely low (e.g. less than 100 ppm) shrinkage, when exposed to 900° C. for 6 hours, and methods for making such glass-ceramics. The glass-ceramic is cerammed at a sufficiently high temperature and then cooling in a controlled manner, preferably to below the strain point of the resultant material. Using this technique, glass-ceramic materials were fabricated which exhibited dimensional shrinkage comparable to and in some cases even less than that achieved by fused silica substrates, when exposed to high temperature poly-Si processing temperatures (e.g. 900° C. for 6 hours).