Patents by Inventor Vasanth Kumar Nalam

Vasanth Kumar Nalam 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).

  • Method for the preparation of aryl piperazinyl-heterocyclic compounds
    Patent number: 7728136
    Abstract: A novel method for preparing a compound of formula I which comprises of coupling the piperazine derivative of formula II with alkyl halide containing compound of the formula III by heating in solvent free conditions or, optionally, in a minimum quantity of non-aqueous suspending liquid, in presence of a catalyst and a neutralizing agent to neutralize the hydrohalic acid.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: June 1, 2010
    Assignee: Lupin Limited
    Inventors: Om Dutt Tyagi, Tushar Kumar Srivastava, Yogendra Kumar Chauhan, Vasanth Kumar Nalam