Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From protein or biologically active polypeptide reactant
Reexamination Certificate
2004-07-08
2008-08-05
Sergent, Rabon (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From protein or biologically active polypeptide reactant
C527S200000, C525S454000, C525S463000, C525S469000
Reexamination Certificate
active
07408014
ABSTRACT:
A modified polyurethane including a lipid substituent pendant from at least one urethane nitrogen and/or at least one carbon atom of the modified polyurethane, methods of preparing modified polyurethanes and the use thereof as an implantable biomaterial.
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Alferiev Ivan
Levy Robert J.
Stachelek Stanley J.
Gillespie Benjamin
RatnerPrestia
Sergent Rabon
The Children's Hospital of Philadelphia
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