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. 23, 1993
Filed:
Dec. 07, 1990
Applicant:
Inventors:
Peter E Pierini, Berkeley, CA (US);
Ritchie A Wessling, Berkeley, CA (US);
Peter K Kim, Danville, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C08G / ;
U.S. Cl.
CPC ...
428245 ; 428224 ; 428286 ; 428288 ; 428289 ; 428408 ; 528408 ; 528 73 ; 528172 ; 528361 ; 524417 ; 524706 ; 524176 ; 524183 ;
Abstract
Fibers may be prepregged with a dope containing polybenzoxazole or polybenzothiazole. The prepreg may be contacted with water or another nonsolvent to coagulate the polymer and form a matrix composite.