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:
Jun. 29, 1999
Filed:
Dec. 05, 1997
Applicant:
Inventors:
Ryuichi Tanabe, Yokohama, JP;
Hiroshi Usui, Yokohama, JP;
Tsuneo Manabe, Yokohama, JP;
Yuichi Kuroki, Funabashi, JP;
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
501 17 ; 501 17 ; 501 76 ;
Abstract
A hermetic sealing composition consisting essentially of from 90 to 99.95 wt % of a crystalline low melting glass powder and from 0.05 to 10 wt % of a low expansion ceramic filler powder, and having an average thermal expansion coefficient after firing of from 80.times.10.sup.-7 to 110.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C., wherein the crystalline low melting glass consists essentially of: