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:
Aug. 09, 2016
Filed:
Feb. 25, 2015
Corning Incorporated, Corning, NY (US);
Douglas Munroe Beall, Painted Post, NY (US);
Gregory Albert Merkel, Corning, NY (US);
Martin Joseph Murtagh, Trumansburg, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A porous ceramic honeycomb article includes a primary cordierite phase and an intercrystalline glass phase. In an as-fired condition, the porous ceramic honeycomb article exhibits microcrack parameter Nb≦0.06 and an as-fired E/Eratio ≦0.99. The article exhibits a coated microcrack parameter Nb≦0.14 and a coated E/Eratio ≦1.06 after the porous ceramic honeycomb article has been washcoated and calcined at a temperature of 550° C. After the article is exposed to a thermal treatment at a temperature ≧800° C. following washcoating and calcining, at least a first portion of the porous ceramic honeycomb article has a first treated microcrack parameter Nb≧0.18, and a first treated mean coefficient of thermal expansion of not more than 12×10/° C. over a temperature range of 25° C. to 800° C. Methods of forming the porous ceramic honeycomb article are also disclosed.