Polypeptides containing 3,4-dihydroxyphenylalanine
Patent 4125519 Issued on November 14, 1978. Estimated Expiration Date: 
October 13, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 13, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2847461 3433766 Polymeric malonates Method of preparing polybenoxazindione polymers from aminophenoxy salicyclic acid compounds Patent #: 3996197 InventorsApplicationNo. 05/731946 filed on 10/13/1976US Classes:528/363, With nitrogen-containing reactant210/688, Heavy metal210/735, Nitrogen containing (e.g., amine, azo, etc.)424/117, Sulfur containing426/133, Having food preserving agent528/210, Phenolic reactant contains a nitrogen atom528/271, FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF528/310, From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid528/325, Two or more lactam reactant or with an amino-containing carboxylic acid or derivative of an amino-containing carboxylic acid528/327, Heterocyclic reactant or a reactant which contains a nitrogen atom bonded directly to another nitrogen atom528/328, From N-C-(C=O)-OH containing reactant or acid derivative thereof, e.g., alpha amino acid, etc.528/369N-C(=O)-OH containing reactant or ester, salt, anhydride, or acyl halide thereofExaminersPrimary: Lee, Lester L.Attorney, Agent or FirmInternational ClassesC08G 69/00 (20060101)C08G 69/10 (20060101) AbstractHomopolymers and copolymers containing the amino acid 3,4-dihydroxy-L-phenylalanine (dopa) have been prepared via the synthesis of a protected N-carboxyanhydride (NCA) of the amino acid. These dopa-containing polymers have many uses as in the treatment of Parkinsonism, as drug delivery systems, antioxidants, and fibers and in the production of non-thrombogenic substrates. | |
