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:
Nov. 01, 2011
Filed:
Jun. 02, 2005
Thomas M. Matviya, McKees Rocks, PA (US);
Darren K. Rogers, Morristown, TN (US);
Thomas M. Matviya, McKees Rocks, PA (US);
Darren K. Rogers, Morristown, TN (US);
Touchstone Research Laboratory, Ltd., Triadelphia, WV (US);
Abstract
According to the present invention there is provided coal-based cellular or porous products, also referred to herein as 'carbon foams', having a density of preferably between about 0.1 g/cmand about 0.8 g/cmand most preferably between about 0.3 and about 0.4 g/cmthat are produced by the controlled heating of coal particulate preferably up to ¼ inch in diameter in a 'mold' and under a non-oxidizing atmosphere. The coal-based cellular or porous products of the present invention have ash contents typically greater than about 1%. More typically these coal-based cellular or porous products have ash contents greater than about 3%, with ash contents in the range of about 7% to 15% being most typical. The ash residue remaining after essentially complete combustion/oxidation of these coal-based cellular or porous products is predominately composed of oxides of aluminum and silicon. Additionally, the cellular coal-based products of the present invention have relatively low overall B.E.T. surface areas. Such surface areas are typically less than about 5 m/g and are commonly in the range of about 1 m/g to about 2 m/g.