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:
Aug. 07, 1990
Filed:
Mar. 30, 1989
Applicant:
Inventors:
Oomman P Thomas, Lake Jackson, TX (US);
Earl E Burt, III, Clute, TX (US);
Richard D Peffley, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
521159 ; 521164 ; 521167 ; 521170 ; 521174 ; 528 59 ; 528 61 ; 528 65 ; 528 66 ; 528 76 ; 528 85 ;
Abstract
A liquid prepolymer composition is disclosed which contains free isocyanate groups which is the reaction product of a stoichiometric excess of a polyisocyanate and an active hydrogen-containing compound which contains an internal rigid polyaromatic grouping. Polyurethane and/or polyurea polymers made from these prepolymer compositions are also disclosed.
Quick Actions:
Thomas, Oomman. (1990). Polyisocyanate prepolymers prepared from rigid polyaromatic precursor (U.S. Patent No. 4946872). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4946872
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile