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:
Sep. 10, 2002
Filed:
Jun. 26, 1997
Gray E. Fowler, Allen, TX (US);
Steve P. Phifer, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method of creating or fabricating a composite preform wherein a mixture of a catalyst and a first epoxy resin is applied to at least one layer of fibers, preferably in the form of a fabric, mat or unidirectional tape. A plurality of stacked layers is formed from layers of fibers with applied mixture thereon, preferably in a mold. The layers are pressurized and/or heated to reduce the viscosity, such as but not limited to melting, of the first epoxy resin and catalyst and then allowed to fuse together to form a preform. The preform in the closed mold is impregnated with a mixture of a second epoxy resin and a polycyanate to cause cross-linking, the cross-linking including the first epoxy resin. The first and second epoxy resins may be the same.