Patents by Inventor Nayaku Nivarati Chavan

Nayaku Nivarati Chavan 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).

  • Copolycarbonate preparation by solid state polymerization
    Patent number: 6333394
    Abstract: Copolycarbonates containing such structural units as birefringence-reducing or “soft block” units are prepared by conducting a reaction, such as melt polymerization or equilibration, between a precursor polycarbonate and a monomer, polycarbonate oligomer or high molecular weight polycarbonate which is a source of other structural units. The crystallinity of the resulting precursor copolycarbonate or one of the reagents employed in its preparation is enhanced and the precursor copolycarbonate is subjected to solid state polymerization.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: December 25, 2001
    Assignee: General Electric Company
    Inventors: Christian Maria Emile Bailly, Bhaskar Bhairavnath Idage, Swaminathan Sivaram, Nayaku Nivarati Chavan, Rein Mollerus Faber, Shamal Karunakaran Menon, Gautam Chatterjee, Godavarthi Satyana Varadarajan, James Day, Patrick Joseph McCloskey, Joseph Anthony King, Jr., Arun Savalaram Jadhav