Drug – bio-affecting and body treating compositions – Enzyme or coenzyme containing – Hydrolases
Reexamination Certificate
2005-08-02
2005-08-02
Spear, James M. (Department: 1615)
Drug, bio-affecting and body treating compositions
Enzyme or coenzyme containing
Hydrolases
C514S054000, C514S057000
Reexamination Certificate
active
06923961
ABSTRACT:
Carboxypolysaccharides (CPS) including carboxymethyl cellulose and their derivatives are provided that can be made into sponges, gels, membranes, particulates and other forms, for a variety of antiadhesion, antithrombogenic, drug delivery and/or hemostatic applications during surgery and pharmacological therapeutics. CPSs derivatized with primary amines can be used alone or in combination with poly(ethylene glycol) and poly(ethylene oxides) and other poly(alkylene oxides) to form materials having improved drug delivery, antiadhesion, and hemostatic uses. Applications include other types of chemical modifications of CPS to provide hydrogen, ionic, Van der Walls interactions and/or covalent bonding with drugs, biologicals and other therapeutic or diagnostic purposes.
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Berg Richard
Liu Lin-Shu
Fliesler & Meyer LLP
Fubara Blessing
FzioMed, Inc.
Spear James M.
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