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. 30, 2000
Filed:
Sep. 19, 1997
Applicant:
Inventor:
Oh-Hun Kwon, Westboro, MA (US);
Assignee:
Saint-Gobain/Norton Industrial Ceramics Corporation, Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501103 ;
Abstract
This invention relates to a densified zirconia ceramic partially stabilized by between 3.8 mol % and 4.4 mol % yttria, wherein the ceramic has a flexural strength of at least 900 MPa after immersion in liquid water having a temperature of 250.degree. C. for 48 hours in an autoclave.