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. 01, 2011
Filed:
Mar. 21, 2008
Abhishek D. Saxena, Somersworth, NH (US);
Paul N. Segit, Dover, NH (US);
Stephen E. Gross, Dover, NH (US);
Abhishek D. Saxena, Somersworth, NH (US);
Paul N. Segit, Dover, NH (US);
Stephen E. Gross, Dover, NH (US);
Lydall, Inc., Manchester, CT (US);
Abstract
There is provided a substrate () capable of carrying uniformly dispersed, finely divided, particulate, solid particles, e.g., catalyst particles () and sustaining temperatures in excess of 1200 degrees F. The substrate comprises a top layer () for containing the particles () and composed of quartz fibers () with an average diameter of between about 0.1 and 4 microns and about 0 to 13% of microglass fibers having a softening point of about 1000 degrees F. A support layer () is composed of the fibers of the top layer and, in addition, bulk refractory, e.g., ceramic, fibers () having and average diameter of about 1 to 4 microns and 0 to 50% of chopped e-glass fiber (). A method for producing the substrate is provided that includes wet laying the top and bottom layers in spaced apart times so that the juncture () between the two layers has intermingled fibers whereby the consolidated layers are not easily separated.