Patents by Inventor Sanjiv Onkarsingh Tomer

Sanjiv Onkarsingh Tomer 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 purification of sucralose
    Patent number: 7741477
    Abstract: The present invention relates to a process for the purification of Sucralose of formula (I) which comprises acetylation of substantially impure Sucralose to its penultimate intermediate 4,1?,6?-trichloro-4,1?,6?-trideoxy galactosucrose penta-acetate (TOPSA) of formula (VI) followed by purification of TOPSA and then deacetylation of purified TOPSA.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: June 22, 2010
    Assignee: Alembic Limited
    Inventors: Pandurang Balwant Deshpande, Parven Kumar Luthra, Sanjiv Onkarsingh Tomer, Piyush Maheshbhai Rana, Jigar Kamleshbhai Patel
  • PROCESS FOR THE PREPARATION OF SUCRALOSE OF HIGH PURITY
    Publication number: 20090312538
    Abstract: The present invention relates to an improved process for the preparation of Sucralose having purity of at least 99.6% comprising steps of (i) dissolving substantially impure Sucralose in water (ii) treating the solution obtained in step (i) with a partially water immiscible solvent (iii) washing the said solvent phase obtained in step (ii) with an amount of water sufficient to remove polar impurities (iv) crystallizing the product from partially water immiscible solvent (v) recrystallizing the solid obtained in step (iv) from water.
    Type: Application
    Filed: October 19, 2006
    Publication date: December 17, 2009
    Applicant: Alembic Limited
    Inventors: Pandurang Balwant Deshpande, Parven Kumar Luthra, Sanjiv Onkarsingh Tomer, Kashyap Ravindrabhai Wadekar, Piyush Maheshbhai Rana, Kamlesh Shankarlal Kanzariya