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:
Jun. 19, 1984
Filed:
Dec. 03, 1982
Applicant:
Inventors:
Yutaka Ogawa, Nagoya, JP;
Seiichi Asami, Okazaki, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
428116 ; 428188 ; 502527 ;
Abstract
A ceramic honeycomb structural body having a high strength wherein the outer peripheral portion including an outer peripheral wall or a part extending from the end surface of the honeycomb body has a smaller porosity than the other portion. Such a ceramic honeycomb structural body is produced by filling pores in the above defined portion of the honeycomb body with a ceramic material having a smaller porosity than the ceramic honeycomb body material.