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. 01, 2005
Filed:
Aug. 29, 2001
Brian E. Joseph, Wheeling, WV (US);
Darren Kenneth Rogers, Wheeling, WV (US);
Brian E. Joseph, Wheeling, WV (US);
Darren Kenneth Rogers, Wheeling, WV (US);
Touchstone Research Laboratory, Ltd., Triadelphia, WV (US);
Abstract
Carbonaceous, composite tooling fabricated from pitch-based or coal-based cellular or porous products, 'carbonaceous foams' having a density of preferably between about 0.1 g/cmand about 0.8 g/cmthat are produced by: 1) conventional pitch foaming processes or; 2) the controlled beating of coal particulate preferably up to ¼ inch in diameter in a 'mold' and under a non-oxidizing atmosphere. According to a specifically preferred embodiment, the starting material coal has a free swell index as determined by ASTM test D720 of between about 3.5 and about 5.0.