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. 22, 1993
Filed:
Nov. 19, 1990
Applicant:
Inventors:
Chi Li, Madison, WI (US);
Stuart L Cooper, Madison, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; 528 ; 528 ; 528 ; 525 ; 525 ; 525 ;
U.S. Cl.
CPC ...
528 28 ; 528 29 ; 528 38 ; 525453 ;
Abstract
Polysiloxane-containing polyurea and polyurea urethane block copolymers and devices formed therefrom are biocompatible and demonstrate improved physical and mechanical properties. The pre-reaction of an amine-terminated polysiloxane soft segment with an organic diisocyanate provides an oligomer that enhances the hydrophilic properties of the copolymer.