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:
Mar. 28, 1995
Filed:
Jan. 14, 1983
Robert Edelman, Staten Island, Richmond County, NY (US);
Richard D Orwoll, Mountainside, Union County, NJ (US);
Other;
Abstract
A thermotropic liquid crystalline polymer matrix having sized carbon fibers incorporated therein for reinforcement. The carbon fibers are coated on their surface with a sizing composition comprising a rigid polyimide coating which is derived from the reaction of at least one aromatic diamine, at least one dianhydride, and at least one aromatic tetracarboxylic acid diester in which the carboxylic acid groups and ester groups are ortho disposed. By the use of appropriate amounts of heat and pressure, multifilamentary bundles of carbon fibers are readily impregnated with thermotropic liquid crystalline polymer to form a prepreg having a uniform distribution of carbon fiber throughout.