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:
Apr. 20, 1976
Filed:
Feb. 10, 1975
Edward A Bush, Painted Post, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
Suppression of a high expansion cristobalite phase during sintering of high silica glass frits crystallizing in situ to predominantly a low-expansion .beta.-spodumene solid solution phase is accomplished by either melting a suppressant compound with the glass batch or adding the suppressant to the glass frit prior to sintering, the cristobalite suppressant being selected from the oxides of the alkali metals, the alkaline earth metals, yttrium, lanthanum, titanium, niobium, tantalum, boron, zinc, lead and antimony. The oxides with divalent and tetravalent cations are selected in quantities of up to about 0.02 moles of suppressant per 100 grams of glass and the other suppressants are selected in quantities up to about 0.01 moles per 100 grams of glass.