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. 27, 1986
Filed:
Feb. 21, 1985
Applicant:
Inventors:
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501136 ; 501153 ;
Abstract
An aluminum porcelain composition, is described, of the ternary Al.sub.2 O.sub.3 --CaO--TiO.sub.2 system, having a compositional range defined by points A, B, C, and D in the composition diagram set forth in the drawing, wherein the points A, B, C, and D represent the following molar fractions of Al.sub.2 O.sub.3, CaO, and TiO.sub.2 :