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:
May. 14, 2002
Filed:
Aug. 02, 2000
Applicant:
Inventors:
Ryuichi Tanabe, Kanagawa, JP;
Hiroshi Usui, Kanagawa, JP;
Yutaka Segawa, Chiba, JP;
Yuichi Kuroki, Chiba, JP;
Eiji Ichikura, Kanagawa, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/074 ; C03C 8/10 ; C03C 8/16 ; C03C 8/20 ;
U.S. Cl.
CPC ...
C03C 3/074 ; C03C 8/10 ; C03C 8/16 ; C03C 8/20 ;
Abstract
A sealing composition having at least one member from &agr;-4PbO.B O crystal powder and Pb O powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO—ZnO—B O —SiO type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an &agr;-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.