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:
Feb. 02, 1988
Filed:
Nov. 28, 1986
Applicant:
Inventors:
Takao Soma, Nagoya, JP;
Minoru Matsui, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501103 ;
Abstract
Disclosed herein is a high durability zirconia porcelain which is high in thermal stability and free from degradation phenomena such as profile change and strength reduction, and is characterized in that change in length after the zirconia porcelain being maintained in hot water at 250.degree. C. for 50 hours is not more than 0.05%.