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:
Dec. 08, 1992
Filed:
Aug. 28, 1991
Applicant:
Inventors:
Shahid P Qureshi, Alpharetta, GA (US);
Richard E Hoffman, Cumming, GA (US);
Richard H Newman-Evans, Alpharetta, GA (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; D04H / ;
U.S. Cl.
CPC ...
428246 ; 428245 ; 428283 ; 428288 ; 428289 ; 428290 ; 428294 ; 428408 ; 4284755 ; 428902 ; 523457 ; 523458 ; 528172 ;
Abstract
Layered, fiber-reinforced composites toughened by the use of thermosetting matrix resins including rigid particles are improved in toughness when the particles are porous and have a spheroidal spongy structure, are formed of a polyamide. The method of the invention is particularly effective in improving the toughness of composites based on thermoset matrix resins, and particularly epoxy resins.