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. 21, 2000
Filed:
Feb. 22, 1994
Thomas F Fay, III, Fair Oaks, CA (US);
Raffaele La Ferla, Hermosa Beach, CA (US);
Andrew J Sherman, Granada Hills, CA (US);
Edwin P Stankiewicz, Sherman Oaks, CA (US);
Ultramet, Pacoima, CA (US);
Abstract
A method of producing an acoustic baffle/catalyst foam support material and the resultant material. A polyurethane open cell foam material is provided having a density between 10-100 ppi. The polyurethane foam is infiltrated with a resin material to produce an impregnated foam. The impregnated foam is pyrolized to form a carbon skeleton forming a carbon foam. The carbon foam skeleton is coated with one or more of the following group of materials to a relative density of five to thirty five (5-35) percent, the group of materials being SiC, Si.sub.3 N.sub.4, MoSi.sub.2 or high temperature metal.