Patents by Inventor Turumella Padmaja

Turumella Padmaja has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of enzymatically degradable polymers
    Patent number: 6316585
    Abstract: The present invention relates to the preparation of enzymatically degradable polymers, having repeating structural unit as shown hereinbelow: X—is selected from phenolic —OH of tyrosine, —OH of serine and threonine and —SH of cysteine Y—is pendant group selected from drug molecules containing carboxyl groups, R—is hydrogen, methyl or mixture of hydrogen and methyl on the individual molecule, n—is an integer from 0 to about 100, and m—is an integer from 0 to 10, the said process comprises the steps of reacting diester of poly (oxyalkylene glycol) and hydrochloride of trifunctional amino acid with a dicarboxylic acid in the presence of a condensing agent in a solvent at a temperature in the range of 0° C.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: November 13, 2001
    Assignee: Council of Scientific and Industrial Research
    Inventors: Bhalchandra Shripad Lele, Turumella Padmaja, Mohan Gopalkrishna Kulkarni