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:
Jun. 19, 2001
Filed:
Mar. 28, 1994
Ramon B. Fernandez, Harbor City, CA (US);
Kenneth A. DeVane, Huntington Beach, CA (US);
Hitco Carbon Composites, Inc., Gardena, CA (US);
Abstract
A process for the preparation of a carbon yarn product includes the steps of pyrolizing raw carbonaceous yarn comprising a plurality of carbon fibers, at a temperature above about 650° F.; flexing the pyrolized yarn to substantially break fiber-to-fiber bonding between the fibers; and, exposing the yarn to a temperature sufficient to carbonize the pre-carbonized yarn to a final and higher carbon assay. A flexible yarn element (,) includes a plurality of carbon filaments (,) wherein each filament (,) is in contact with at least one other filament,. A sizing material at least partially coats the plurality of filaments (,), wherein the sizing material of each filament (,) is substantially separated from the sizing material of the at least one other filament (,) in contact therewith.