Patents by Inventor Vijendra Singh Rawat

Vijendra Singh Rawat 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 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 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