Patents by Inventor Madhuresh Kumar Sethi

Madhuresh Kumar Sethi 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).

  • Novel Crystalline Form of Levomefolate
    Publication number: 20170129893
    Abstract: The present disclosure relates to crystalline forms of levomefolate calcium). The present disclosure also relates to a process for the preparation of crystalline forms of levomefolate calcium.
    Type: Application
    Filed: June 12, 2015
    Publication date: May 11, 2017
    Inventors: Madhuresh Kumar Sethi, Vijendra Singh Rawat, Jaganmohana Rao Bontalakoti, LKakshminarayana Vemula
  • Process for the preparation of intermediates of HMG-CoA reductase inhibitors
    Patent number: 9273333
    Abstract: The present invention relates to an improved process for the preparation of compound of Formula-II, which is an intermediate in the preparation of HMG-CoA reductase inhibitors. wherein X is hydrogen or hydroxy protecting group and R1 is carboxyl protecting group.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: March 1, 2016
    Assignee: Mylan Laboratories LTD
    Inventors: Michiel Christian Alexander Van Vliet, Willem Robert Klaas Schoevaart, Madhuresh Kumar Sethi, Sanjay Mahajan, Bhairaiah Mara
  • Novel Process for the Preparation of Intermediates of HMG-CoA Reductase Inhibitors
    Publication number: 20140349350
    Abstract: The present invention relates to an improved process for the preparation of compound of Formula-II, which is an intermediate in the preparation of HMG-CoA reductase inhibitors. wherein X is hydrogen or hydroxy protecting group and R1 is carboxyl protecting group.
    Type: Application
    Filed: May 28, 2014
    Publication date: November 27, 2014
    Inventors: Michiel Christian Alexander Van Vliet, Willem Robert Klass Schoevaart, Madhuresh Kumar Sethi, Sanjay Mahajan, Bhairaiah Mara
  • PROCESS FOR THE PREPARATION OF AMORPHUS VALGANCYCLOVIR HYDROCHLORIDE
    Publication number: 20130133289
    Abstract: Amorphous valgancyclovir hydrochloride has a median particle size of below 100 ?m. A process for the preparation of the compound includes dissolving valgancyclovir hydrochloride in at least one solvent, removing the solvents under moisture controlled conditions, and drying the wet mass.
    Type: Application
    Filed: May 24, 2012
    Publication date: May 30, 2013
    Inventors: Madhuresh Kumar Sethi, Vijendra Singh Ravat, Raja Krishna Yerramalla, Lakshminarayana Vemula, Jagan Mohana Rao Bontalakoti, Kartikeyan Ayyaran, Debashish Datta
  • Process for the preparation of pure rabeprazole
    Patent number: 8247568
    Abstract: The present invention relates to a process for the preparation of pure Rabeprazole sulfoxide using the solvent mixture for the extraction steps and this invention further relates to the process for the preparation of amorphous Rabeprazole sodium using pure rabeprazole base in presence of aqueous NaOH and water miscible solvent and adding an anti-solvent.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: August 21, 2012
    Assignee: Matrix Laboratories Ltd
    Inventors: Om Dutt Tyagi, Purna Chandra Ray, Madhuresh Kumar Sethi, Bhausaheb Chavhan
  • Process for the preparation of olmesartan medoxomil
    Patent number: 8048904
    Abstract: The present invention provides a process for the preparation of Olmesartan medoxomil by condensing the ethyl 4-(1-hydroxy-1-methylethyl)-2-propylimidazole-5-carboxylate with 4-[2-(trityl tetrazol-5-yl)phenyl]benzyl bromide to obtain ethyl 4-(1-hydroxy-1-methyl ethyl)-2-propyl-1-{4-[2-(trityl tetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate and then hydrolyzing ethyl 4-(1-hydroxy-1-methyl ethyl)-2-propyl-1-{4-[2-(trityl tetrazol-5-yl)phenyl]phenyl}methyl imidazole-5-carboxylate to obtain trityl Olmesartan dihydrate followed by reacting trityl Olmesartan dihydrate with 4-chloromethyl-5-methyl-2-oxo-1,3-dioxolene to obtain trityl Olmesartan medoxomil and then deprotecting trityl Olmesartan medoxomil to obtain Olmesartan medoxomil.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 1, 2011
    Assignee: Matrix Laboratories Ltd.
    Inventors: Gorantla Seeta Ramanjaneyulu, Bandari Mohan, Purna Chandra Ray, Madhuresh Kumar Sethi, Vijendra Singh Rawat, Yerramalla Raja Krishna, Vemula Lakshminarayana, Mamidi Srinivas
  • PROCESS FOR THE PREPARATION OF PURE RABEPRAZOLE
    Publication number: 20100190989
    Abstract: The present invention relates to a process for the preparation of pure Rabeprazole sulfoxide using the solvent mixture for the extraction steps and this invention further relates to the process for the preparation of amorphous Rabeprazole sodium using pure rabeprazole base in presence of aqueous NaOH and water miscible solvent and adding an anti-solvent.
    Type: Application
    Filed: June 19, 2008
    Publication date: July 29, 2010
    Applicant: MATRIX LABORATORIES LTD
    Inventors: Om Dutt Tyagi, Purna Chandra Ray, Madhuresh Kumar Sethi, Bhausaheb Chavhan
  • PROCESS FOR THE PREPARATION OF OLMESARTAN MEDOXOMIL
    Publication number: 20090281327
    Abstract: The present invention provides a process for the preparation of Olmesartan medoxomil] by condensing the ethyl 4-(1-hydroxy-1-methylethyl)-2-propylimidazole-5-carboxylate with 4-[2-(trityl tetrazol-5-yl)phenyl]benzyl bromide to obtain ethyl 4-(1-hydroxy-1-methyl ethyl)-2-propyl-1-{4-[2-(trityl tetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate and then hydrolyzing ethyl 4-(1-hydroxy-1-methyl ethyl)-2-propyl-1-{4-[2-(trityl tetrazol-5-yl)phenyl]phenyl}methyl imidazole-5-carboxylate to obtain trityl Olmesartan dihydrate followed by reacting trityl Olmesartan dihydrate with 4-chloromethyl-5-methyl-2-oxo-1,3-dioxolene to obtain trityl Olmesartan medoxomil and then deprotecting trityl Olmesartan medoxomil to obtain Olmesartan medoxomil.
    Type: Application
    Filed: June 15, 2007
    Publication date: November 12, 2009
    Inventors: Gorantla Seeta Ramanjaneyulu, Bandari Mohan, Purna Chandra Ray, Madhuresh Kumar Sethi, Vijendra Singh Rawat, Yerramalla Raja Krishna, Vemula Lakshminarayana, Mamidi Srinivas