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:
Feb. 20, 2007
Filed:
Jun. 25, 2003
Gregory A. Merkel, Painted Post, NY (US);
Tinghong Tao, Big Flats, NY (US);
Gregory A. Merkel, Painted Post, NY (US);
Tinghong Tao, Big Flats, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a CTE (25–800° C.) of less than 13×10/° C., a bulk filter density of less than 0.60 g/cm, a median pore diameter, d, of less than 25 micrometers, a porosity and pore size distribution that satisfy the relationship P≦3.75, wherein Pis equal to 10.2474{1/[(d)(% porosity/100)]}+0.0366183(d)−0.00040119(d)+0.468815(100/% porosity)+0.0297715(d)+1.61639(d−d)/d, wherein d, and dare pore diameters at 10% and 90% of the pore size distribution on a volumetric basis, and d<d<d. A method of making the same is also provided.