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:
Mar. 16, 2010
Filed:
Sep. 04, 2003
Yukihito Ichikawa, Nagoya, JP;
Yukihito Ichikawa, Nagoya, JP;
NGK Insulators, Inc., Nagoya, JP;
Abstract
A honeycomb structure has a cell structure sectionan outer circumferential wall section. The cell structure sectionincludes a first partition wall group having partition wallspositioned in parallel and a second partition wall group having partition wallswhich intersect the partition walls of the first partition wall group at right angles and are positioned in parallel. In this honeycomb structure, the partition wall intervals of the partition wallsandof each partition wall group positioned in parallel are varied stepwise in at least a part of the cell structure section, and all the partition wallsandhave such a ratio of the cell side length to the partition wall thickness that the partition wall can withstand pressure during canning. The honeycomb structure has increased isostatic strength and thermal shock resistance and can be manufactured at low cost.