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:
Aug. 13, 2002
Filed:
Jun. 01, 2000
Applicant:
Inventors:
George B. Hares, Corning, NY (US);
Dianna M. Young, Corning, NY (US);
Assignee:
Corning Incorporated, Corning, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/091 ; C03C 3/105 ; C03C 3/108 ;
U.S. Cl.
CPC ...
C03C 3/091 ; C03C 3/105 ; C03C 3/108 ;
Abstract
The present invention is directed at a leaded copper boroaluminosilicate glass, having coefficients of thermal expansion (CTES) of between 25-55×10 /°C. (over a range of 25-300° C.) and a softening point in the range of 550-725° C., being suitable for use as a sealing glass, especially for borosilicate glasses, and having a composition consisting essentially, in terms of weight percent on an oxide basis, of 27-60 SiO , 3-14 Al O , 9-28 B O , 0.0-10 R O, 0.1-40 PbO, 0.1-11 CuO, where R O is an alkali oxide selected from the group consisting of Li O, Na O, K O, Rb O and Cs O.