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. 28, 2010
Filed:
Mar. 25, 2009
Toshio Yamada, Nagoya, JP;
Takeshi Tokunaga, Nagoya, JP;
Makoto Furutani, Komaki, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
There is disclosed a honeycomb structure in which while sufficiently maintaining a collection efficiency and a bonding strength of a plugging portion, a thermal shock resistance is improved. A plugging portionis formed in the end of each cellof a honeycomb structure, and a gaphaving a size of 20 μm or more is formed between the plugging portionand each partition wall. Moreover, the length of the gapin the axial direction is 50% or more and less than 95% of the length of the plugging portionin the axial direction, the length of the gap in a face vertical to the axial direction is 20% or more and 50% or less of the length of the inner peripheral surface of the cell, and the gaps are formed in at least ⅓ of the plugging portions