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:
Nov. 19, 1991
Filed:
Jun. 21, 1990
Applicant:
Inventor:
Masyood Akhtar, San Diego, CA (US);
Assignee:
Johnson Matthey Inc., Valley Forge, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C09D / ;
U.S. Cl.
CPC ...
501 41 ; 501 32 ; 501 46 ; 501 47 ; 501 49 ; 501 51 ; 106-114 ;
Abstract
Described is a sealing glass composition comprising, in wt. %, 13-50% lead oxide, 20-50% vanadium oxide, 2-40% tellurium oxide, up to 40% selenium oxide, up to 10% phosphorous oxide, up to 5% niobium oxide, up to 20% bismuth oxide, up to 5% copper oxide and up to 10% boron oxide and an electrically conductive formulation comprising, in wt. %, 50-77% silver, 8-34% of a sealing glass composition as described previously, 0.2-1.5% resin and thixotrope and 10-20% organic solvent.