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:
Feb. 05, 1980
Filed:
Sep. 01, 1978
Richard F Reade, Corning, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
The instant invention is related to the production of highly refractory glass-ceramic articles having moderate coefficients of thermal expansion in the CaO-Al.sub.2 O.sub.3 -SiO.sub.2 -TiO.sub.2 field wherein anorthite comprises the predominant crystal phase with a minor amount of rutile also being present. The articles demonstrate very high D.C. volume resistivities and high dielectric constants with exceptionally low loss tangents and dielectric loss factors. Their refractoriness and moderate expansion suggests an application such as kiln furniture where high temperatures, but not severe temperature changes, are encountered. Their high D.C. resistivities and low A.C. dielectric losses suggest their utility as insulators and electronic substrate materials.