Patents by Inventor Veldurthy Bhaskar

Veldurthy Bhaskar 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).

  • Patent number: 6472555
    Abstract: The present invention relates to a process for the preparation of esters from alcohols using acetic acid as acetylating agent and clays as catalysts, which comprises the preparation of esters in a single step from the reaction of aliphatic, acyclic, cyclic, heterocyclic, &agr;,&bgr;-unsaturated and aromatic alcohols with carbon atoms in the range of C1 to C10 with acetic acid in a molar ratio of 1:3 to 11 using reusable natural montmorillonite/metal ion-exchanged clay catalysts in the solvent medium of aliphatic, aromatic, or chlorinated hydrocarbons at 30-140° C. for a period in the range of 0.02 to 3.0 hrs, and recovering the corresponding esters by simple work-up procedure.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: October 29, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Boyapati Manoranjan Choudary, Veldurthy Bhaskar, Mannepalli Lakshmi Kantam, Kottapalli Koteswara Rao, Kondapuram Vijaya Raghavan
  • Patent number: 6215024
    Abstract: The present invention provides a novel single step process for the production of amides from amines comprising reaction of amines with an acylating agent comprising of a carboxylic acid in a molar ratio of 1:3 to 1:10 in the presence of reusable natural montmorillonite/metal ion-exchanged clay catalysts, in a suitable solvent medium at a temperature in the range of 30-160° C. for a period of 0.02 to 6 hrs, and recovering the corresponding amides by a conventional simple work-up procedure.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: April 10, 2001
    Assignee: Council of Scientific and Industrial Research
    Inventors: Boyapati Manoranjan Choudary, Veldurthy Bhaskar, Mannepalli Lakshmi Kantam, Kottapalli Koteswara Rao, Kondapuram Vijaya Raghavan