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:
Apr. 08, 2014
Filed:
Mar. 18, 2009
Shunji Okazaki, Miyako-gun, JP;
Toshitaka Ishizawa, Miyako-gun, JP;
Shunji Okazaki, Miyako-gun, JP;
Toshitaka Ishizawa, Miyako-gun, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A ceramic honeycomb structure having a large number of flow paths defined by porous cell walls having porosity of 45-68% and an average pore size of 15-35 μm, the volume of pores having diameters of more than 50 μm being more than 10% and 25% or less of the total pore volume, the volume of pores having diameters of 100 μm or more being 1-8% of the total pore volume, the volume of pores having diameters of less than 10 μm being 3-10% of the total pore volume, and the pores having a pore size distribution deviation σ [=log(D)−log(D)] of 0.45 or less, wherein Drepresents a pore size (μm) at a pore volume corresponding to 20% of the total pore volume, and Drepresents a pore size (μm) at a pore volume corresponding to 80% of the total pore volume, in a curve showing the relation between a pore size and a cumulative pore volume obtained by accumulating a pore volume from the maximum pore size to a particular pore size, and D<D.