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:
Oct. 18, 1994
Filed:
Nov. 15, 1993
Applicant:
Inventors:
Robert A Bubeck, Midland, MI (US);
Chieh-Chun Chau, Midland, MI (US);
Stephen J Nolan, Saginaw, MI (US);
Steven Rosenberg, Midland, MI (US);
Mark D Newsham, Midland, MI (US);
Myrna Serrano, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01D / ;
U.S. Cl.
CPC ...
264205 ; 26421112 ; 26421113 ; 26421119 ; 2642108 ; 528183 ; 528321 ; 528337 ; 528342 ;
Abstract
A process for making PBZ fibers of ultra-high physical properties is given. Polybenzoxazole fibers made by the process of this invention have tensile strengths nearly double in value from what has been reported previously.