Patents by Inventor Sudhir Singh

Sudhir Singh 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 CRYSTALLINE FORM II OF L-MALIC ACID SALT OF SUNITINIB
    Publication number: 20130197242
    Abstract: The present invention relates to stable crystalline Form II of L-malic acid salt of sunitinib and its preparation.
    Type: Application
    Filed: November 19, 2010
    Publication date: August 1, 2013
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Sudhir Singh Sanwal, Saridi Madhava Dileep Kumar, Swargam Sathyanarayana
  • PROCESS FOR THE DIRECT PREPARATION OF MALIC ACID SALT OF SUNITINIB
    Publication number: 20130123511
    Abstract: The present invention relates to a process for the direct preparation of malic acid salt of sunitinib.
    Type: Application
    Filed: February 25, 2011
    Publication date: May 16, 2013
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Sudhir Singh Sanwal, Saridi Madhava Dileep Kumar, Swargam Sathyanarayana, Rajesh Kumar Thaper, Mohan Prasad
  • PROCESS FOR THE PREPARATION OF CRYSTALLINE FORM I OF L-MALIC ACID SALT OF SUNITINIB
    Publication number: 20120271056
    Abstract: The present invention relates to a process for the preparation of crystalline Form I of the L-malic acid salt of sunitinib.
    Type: Application
    Filed: November 12, 2010
    Publication date: October 25, 2012
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Sudhir Singh Sanwal, Saridi Madhava Dileep Kumar, Swargam Sathyanarayana, Rajesh Kumar Thaper, Mohan Prasad
  • SALTS OF SUNITINIB
    Publication number: 20120220783
    Abstract: The present invention relates to salts of sunitinib and their preparation.
    Type: Application
    Filed: September 16, 2010
    Publication date: August 30, 2012
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Sudhir Singh Sanwal, Saridi Madhava Dileep Kumar, Swargam Sathyanarayana, Rajesh Kumar Thaper, Mohan Prasad
  • CYTOTOXIC AGENTS
    Publication number: 20080090831
    Abstract: The invention provides compounds of the invention pharmaceutical compositions comprising a compound of the invention, processes for preparing compounds of the invention, intermediates useful for preparing compounds of the invention, and therapeutic methods for treating cancer and other topoisomerase mediated conditions.
    Type: Application
    Filed: December 12, 2007
    Publication date: April 17, 2008
    Inventors: Edmond LaVoie, Alexander Ruchelman, Sudhir Singh, Abhijit Ray, Leroy Liu
  • Nitro and amino substituted heterocycles as topoisomerase I targeting agents
    Publication number: 20070015751
    Abstract: The invention provides compounds of formula I: wherein: R1-R5,“a” and X have any of the meanings defined in the specification and their pharmaceutically acceptable salts. The invention also provides pharmaceutical compositions comprising a compound of formula I, processes for preparing compounds of formula I, intermediates useful for preparing compounds of formula I, and therapeutic methods for treating cancer using compounds of formula I.
    Type: Application
    Filed: January 25, 2006
    Publication date: January 18, 2007
    Inventors: Edmond LaVoie, Sudhir Singh, Leroy Liu
  • Cytotoxic agents
    Publication number: 20050009825
    Abstract: The invention provides compounds of the invention pharmaceutical compositions comprising a compound of the invention, processes for preparing compounds of the invention, intermediates useful for preparing compounds of the invention, and therapeutic methods for treating cancer and other topoisomerase mediated conditions.
    Type: Application
    Filed: May 14, 2004
    Publication date: January 13, 2005
    Inventors: Edmond LaVoie, Alexander Ruchelman, Sudhir Singh, Abhijit Ray, Leroy Liu