Patents by Inventor Wadhwa Lalit

Wadhwa Lalit 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 pure risedronic acid or salts
    Patent number: 8076483
    Abstract: The present invention relates to an industrially advantageous process of making bisphosphonic acid or its salt in particular risedronic acid, [1-hydroxy-2(3-pyridinyl)ethylidene]bisphosphonic acid, having formula-(I) or its salts in high purity and high yields.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: December 13, 2011
    Assignee: M/s. Ind Swift Laboratories Limited
    Inventors: Saxena Rahul, Jain Anshul Kumar, Srinivasan Chidambaram Venkateswaran, Wadhwa Lalit
  • PROCESS FOR THE PREPARATION OF PURE RISEDRONIC ACID OR SALTS
    Publication number: 20090182147
    Abstract: The present invention relates to an industrially advantageous process of making bisphosphonic acid or its salt in particular risedronic acid, [1-hydroxy-2(3-pyridinyl)ethylidene]bisphosphonic acid, having formula-(I) or its salts in high purity and high yields.
    Type: Application
    Filed: May 9, 2007
    Publication date: July 16, 2009
    Inventors: Saxena Rahul, Jain Anshul Kumar, Srinivasan Chidambaram Venkateswaran, Wadhwa Lalit
  • PROCESS FOR THE PREPARATION OF POLYMORPHIC FORMS OF CLOPIDOGREL HYDROGEN SULFATE
    Publication number: 20090099363
    Abstract: The present invention relates to a novel process for the preparation of polymorphic forms of clopidogrel hydrogen sulfate, namely methyl(+)-(S)-?-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate hydrogen sulfate of formula (I). Particularly the present invention relates to the process for the preparation of form (I) and amorphous clopidogrel hydrogen sulfate.
    Type: Application
    Filed: April 25, 2007
    Publication date: April 16, 2009
    Inventors: Saxena Rahul, Verma Naresh Kumar, Srinivasan Chidambaram Venkateswaran, Wadhwa Lalit