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:
Jul. 13, 1999
Filed:
Sep. 22, 1994
Applicant:
Inventors:
Masashi Tsuzuki, Konan, JP;
Masahiko Okuyama, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428220 ; 428427 ; 428428 ; 428432 ; 428446 ; 428701 ; 428702 ; 428704 ; 428697 ; 501 14 ; 501 22 ; 501 24 ; 501 26 ; 501 47 ; 501 48 ; 501 50 ; 501 52 ; 501 79 ; 501 77 ; 501 78 ;
Abstract
A glaze composition suitable for a thin chip substrate, for example. The glaze composition makes a low-temperature glazing possible and is superior in the electrical and chemical stability. The glaze composition can prevent even a thin substrate from warping and can easily form an extensive smooth glaze layer without deteriorating a thin glaze face. The components of the composition are 20% to 50% by weight of boron oxide, 5% to 35% by weight of aluminum oxide, and 15% to 55% by weight of at least one alkaline-earth oxide selected from the group consisting of calcium oxide, strontium oxide, magnesium oxide and barium oxide.