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:
Dec. 14, 1999
Filed:
Nov. 26, 1997
Applicant:
Inventors:
Shigeki Niwa, Aichi, JP;
Tadashi Kimura, Aichi, JP;
Hiroshi Okada, Aichi, JP;
Toshiyuki Suzuki, Aichi, JP;
Kenithi Urathuji, Hyogo, JP;
Ataru Nishikawa, Hyogo, JP;
Mamoru Uemura, Hyogo, JP;
Assignee:
Toshiba Ceramics Co., Ltd,, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G / ;
U.S. Cl.
CPC ...
428336 ; 51295 ; 51307 ; 51309 ; 428697 ; 428699 ; 428701 ; 428702 ; 427446 ; 427453 ;
Abstract
A calcining tool material, comprising a flame-spray zirconia coating layer made of unstabilized zirconia and stabilized or partially-stabilized zirconia in admixture, formed on the surface of an alumina-silica-based substrate having an Al.sub.2 O.sub.3 content of not less than 65% by weight.