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:
May. 05, 2009
Filed:
Apr. 23, 2004
Chandan Saha, West Bloomfield, MI (US);
Sharon Allen, Midland, MI (US);
Chan Han, Midland, MI (US);
Robert T. Nilsson, Midland, MI (US);
Arthur R. Prunier, Jr., Midland, MI (US);
Aleksander J. Pyzik, Midland, MI (US);
Sten A. Wallin, Midland, MI (US);
Robin Ziebarth, Midland, MI (US);
Timothy J. Gallagher, Midland, MI (US);
Chandan Saha, West Bloomfield, MI (US);
Sharon Allen, Midland, MI (US);
Chan Han, Midland, MI (US);
Robert T. Nilsson, Midland, MI (US);
Arthur R. Prunier, Jr., Midland, MI (US);
Aleksander J. Pyzik, Midland, MI (US);
Sten A. Wallin, Midland, MI (US);
Robin Ziebarth, Midland, MI (US);
Timothy J. Gallagher, Midland, MI (US);
Dow Global Technologies, Inc., Midland, MI (US);
Abstract
A porous mullite composition is made by Forming a mixture of one or more precursor compounds having the elements present in mullite (e.g., clay, alumina, silica) and a property enhancing compound. The property enhancing compound is a compound having an element selected from the group consisting of Mg, Ca, Fe, Na, K, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, B, Y, Sc, La and combination thereof. The mixture is shaped and to form a porous green shape which is heated under an atmosphere having a fluorine containing gas to a temperature sufficient to form a mullite composition comprised substantially of acicular mullite grains that are essentially chemically bound.