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:
Jun. 15, 1993
Filed:
Mar. 01, 1991
Applicant:
Inventors:
Thomas Gregory, Midland, MI (US);
Carl W Hurtig, Stade, DE;
Harvey D Ledbetter, Pinehurst, NC (US);
Kenneth J Quackenbush, Saginaw, MI (US);
Steven Rosenberg, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528377 ; 524417 ; 524706 ; 528183 ; 528185 ; 528271 ; 528377 ; 528378 ; 528406 ; 528408 ; 528423 ;
Abstract
Polybenzazole polymers can be synthesized rapidly in large quantities at high molecular weight and high concentration by a two-step process of forming oligomers in a batch reactor and advancing the molecular weight of the polymer in an extruder.
Quick Actions:
Gregory, Thomas. (1993). Semi-continuous process for synthesis of polybenzazole polymers (U.S. Patent No. 5219981). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5219981
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile