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:
Apr. 12, 2005
Filed:
Feb. 24, 2003
Dai Huang, Sagamore Hills, OH (US);
Richard T. Lewis, Auburn, OH (US);
Irwin C. Lewis, Strongsville, OH (US);
David Snyder, Cuyahoga Falls, OH (US);
Dai Huang, Sagamore Hills, OH (US);
Richard T. Lewis, Auburn, OH (US);
Irwin C. Lewis, Strongsville, OH (US);
David Snyder, Cuyahoga Falls, OH (US);
UCAR Carbon Company Inc., Wilmington, DE (US);
Abstract
A mixture of carbon-containing fibers, such as mesophase or isotropic pitch fibers, a suitable matrix material, such as a milled pitch is compressed while resistively heating the mixture to form a carbonized composite material. Preferably, the carbonized material has a density of at least about 1.30 g/cm. Preferably, the composite material is formed in less than ten minutes. This is a significantly shorter time than for conventional processes, which typically take several days and achieve a lower density material. A treating component may be impregnated into the composite. Consequently, carbon composite materials having final densities of about 1.6-1.8 g/cmor higher are readily achieved with one or two infiltration cycles using a pitch or other carbonaceous material to fill voids in the composite and rebaking.