Patents by Inventor Uttam Kumar Ray

Uttam Kumar Ray 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 preparation of Rotigotine and intermediates thereof
    Patent number: 10611749
    Abstract: The present invention relates to a novel process for the preparation of Rotigotine of formula (I) and intermediates thereof.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 7, 2020
    Assignee: Solara Active Pharma Sciences Limited
    Inventors: Victor Paul Raj Irudayaraj, Senthilkumar Subramani, Vedhachalam Govindaraj, Jeyakanthan Jayavelu, Boopathy Jayaraman, Uttam Kumar Ray, Tangirala Vittal
  • Process for the preparation of sevelamer carbonate
    Patent number: 10479865
    Abstract: The present invention relates to a process for the preparation of Sevelamer carbonate from polyallylamine hydrochloride.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: November 19, 2019
    Assignee: Strides Shasun Limited
    Inventors: Narayanan Sivasankaran, Iyappan Murugan, Karikalan Thangaraju, Iyyanar Kuppusamy, Uttam Kumar Ray, Tangirala Vittal
  • Process for Preparation of Chlorpromazine or its Pharmaceutically Acceptable Salts
    Publication number: 20190314385
    Abstract: Provided herein is a process for the preparation of Chlorpromazine or its pharmaceutically acceptable salts, preferably process for the preparation of Chlorpromazine or its pharmaceutically acceptable salts thereof having high purity.
    Type: Application
    Filed: March 4, 2019
    Publication date: October 17, 2019
    Inventors: Sankar Arjunan, Senthilnathan Palanivel, Aramanai Lakshmanan Srinivasan, Thirumalai Adhimoolam, Devendra Prasad Krishnan, Uttam Kumar Ray, Tangirala Vittal
  • Novel Process for Preparation of Rotigotine and Intermediates Thereof
    Publication number: 20190248758
    Abstract: The present invention relates to a novel process for the preparation of Rotigotine of formula (I) and intermediates thereof.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Inventors: Victor Paul Raj Irudayaraj, Senthilkumar Subramani, Vedhachalam Govindaraj, Jeyakanthan Jayavelu, Boopathy Jayaraman, Uttam Kumar Ray, Tangirala Vittal
  • Process for the Preparation of Sevelamer Carbonate
    Publication number: 20190127524
    Abstract: The present invention relates to a process for the preparation of Sevelamer carbonate from polyallylamine hydrochloride.
    Type: Application
    Filed: February 23, 2018
    Publication date: May 2, 2019
    Inventors: Narayanan Sivasankaran, Iyappan Murugan, Karikalan Thangaraju, Iyyanar Kuppusamy, Uttam Kumar Ray, Tangirala Vittal
  • Process for preparing olanzapine form I
    Patent number: 8106188
    Abstract: An improved for preparing Olanzapine Form I of Formula 1 in the presence of one solvent or a mixture of solvents.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: January 31, 2012
    Assignee: Aurobindo Pharma Ltd
    Inventors: Uttam Kumar Ray, Sreenivasa Rao Pathuri, Sivakumaran Meenakshisunderam
  • Process for the Preparation of Leukotriene Receptor Antagonist (Montelukast Sodium)
    Publication number: 20090326232
    Abstract: The present invention relates to an improved process for the preparation of [R-(E)]-1-[[[1-[3-[2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic acid, monosodium salt of Formula (I).
    Type: Application
    Filed: June 25, 2007
    Publication date: December 31, 2009
    Inventors: Uttam Kumar Ray, Sreenivasulu Boju, Sreenivasa Rao Pathuri, Sivakumaran Meenakshisunderam
  • Process for preparing Olanzapine form I
    Publication number: 20090131658
    Abstract: An improved for preparing Olanzapine Form I of Formula 1 in the presence of one solvent or a mixture of solvents.
    Type: Application
    Filed: June 1, 2006
    Publication date: May 21, 2009
    Inventors: Uttam Kumar Ray, Sreenivasa Rao Pathuri, Sivakumaran Meenakshisunderam
  • Process for preparing a pure, pharmacopoeial grade amorphous form of cefuroxime axetil
    Patent number: 6384213
    Abstract: There is described a process for the preparation of a pure amorphous form of cefuroxime axetil which involves dissolving crystalline cefuroxime axetil in acetic acid including at least 5% v/v water and recovering said amorphous form of cefuroxime axetil from the solution by the addition of additional water, the solution being added all at once to the additional water being present in a volume which is sufficient to precipitate said amorphous cefuroxime axetil.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: May 7, 2002
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Vijay Kumar Handa, Om Dutt Tyagi, Uttam Kumar Ray