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. 22, 1990
Filed:
Feb. 22, 1988
Masashi Ohtaka, Mie, JP;
Kazuhiro Miyahara, Nagoya City, JP;
NGK Insulators, Ltd., , JP;
Abstract
A process for firing ceramic honeycomb structural bodies at a certain temperature in a given atmosphere is disclosed. The ceramic honeycomb structural bodies are fired, while a gas having a temperature equal to that of an atomsphere surrounding the exterior of the ceramic honeycomb structural bodies is forcedly passed through holes of the ceramic honeycomb structural bodies. By this firing process, a pore-forming agent and/or a shaping aid admixed in the ceramic honeycomb structural bodies can effectively be burnt away and the entire honeycomb structural bodies can uniformly be fired. Thus, fired ceramic honeycomb structural body having desired dimensions can be obtained in a shortened firing time.