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:
Jan. 11, 2000
Filed:
Dec. 10, 1997
Applicant:
Inventor:
Mitsuru Hattori, Ama-gun, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
264671 ; 264605 ;
Abstract
A method for producing a long ceramic body with lower shape fluctuations and higher shape accuracy, by controlling the deformation of the long ceramic body, includes firing a long non-sintered ceramic body which has been suspended in a sheath so as not to contact directly the interior surface of the sheath, at a sufficient temperature and for a sufficient time until sintering is completed; inverting the long body; and re-firing the long body at a sufficient temperature for re-sintering the same. A predetermined downward load is applied to the long body in the vicinity of the bottom thereof during re-firing.