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. 26, 1991
Filed:
Jun. 29, 1989
Applicant:
Inventors:
George H Beall, Big Flats, NY (US);
James E Dickinson, Jr, Corning, NY (US);
Candace J Quinn, Corning, NY (US);
Assignee:
Corning Incorporated, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
501 45 ; 501 48 ;
Abstract
This invention is concerned with the preparation of glasses exhibiting transition temperatures below 450.degree. C., working temperatures below 500.degree. C., and exceptional resistance to mild aqueous alkaline solutions consisting essentially, expressed in terms of mold percent on the oxide basis, of: