Patents by Inventor Bolineni Nageswara Rao

Bolineni Nageswara Rao 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 5-benzyloxy-2-(4-benzyloxyphenyl)-3-methyl-1H-indole
    Patent number: 7968732
    Abstract: The present invention is related to a process for the preparation of 5-benzyloxy-2-(4-benzyloxyphenyl)-3-methyl-1H-Indole (formula-1, a useful intermediate for the synthesis of bazedoxifene) using 4-benzyloxy propiophenone and 4-benzyloxy phenyl hydrazine hydrochloride.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: June 28, 2011
    Assignee: Divi's Laboratories, Ltd.
    Inventors: Murali Krishna Prasad Divi, Bolineni Nageswara Rao, Dandu Venkata Suresh
  • Process for the resolution of racemic (R,S) -5-(2-(2-(2- ethoxyphenoxy) ethylamino)Propyl)-2-methoxybenzene sulfonamide (tamsulosin), its novel R and S isomers and their salts and processes for their preparation
    Patent number: 7238839
    Abstract: An improved process is described to resolve a racemic mixture in any proportion of 5-(2-(2-(2-ethoxyphenoxy)ethylamino)propyl)-2-methoxy benzene sulfonamide as a free base or some of its salts, with BPA either S or R form to obtain enantiomerically highly pure R and S-isomer as a well characterized free base or as a salt of the title compound. Also described are novel R and S-isomers of 5-(2-(2-(2-ethoxyphenoxy) ethylamino)propyl)-2-methoxy benzene sulfonamide and their salts and the processes for their preparation.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: July 3, 2007
    Assignee: Divi's Laboratories Limited
    Inventors: Bolineni Nageswara Rao, Mutyala Krishnaji Rao, Allupati Padmanav Patro, Ambadipudi Udayalakshmi, Mutyala Veeraiah, Gundu Rao Padakandala
  • Process for the resolution of racemic (R,S) -5-(2-(2-(2- ethoxyphenoxy) ethylamino)propyl)-2-methoxybenzene sulfonamide (tamsulosin), its novel R and S isomers and their salts and processes for their preparation
    Publication number: 20060079714
    Abstract: An improved process is described to resolve a racemic mixture in any proportion of 5-(2-(2-(2-ethoxyphenoxy)ethylamino)propyl)-2-methoxy benzene sulfonamide as a free base or some of its salts, with BPA either S or R form to obtain enantiomerically highly pure R and S-isomer as a well characterized free base or as a salt of the title compound. Also described are novel R and S-isomers of 5-(2-(2-(2-ethoxyphenoxy) ethylamino)propyl)-2-methoxy benzene sulfonamide and their salts and the processes for their preparation.
    Type: Application
    Filed: May 24, 2005
    Publication date: April 13, 2006
    Applicant: DIVI'S LABORATORIES LIMITED
    Inventors: Bolineni Nageswara Rao, Mutyala Rao, Allupati Patro, Ambadipudi Udayalakshmi, Mutyala Veeraiah, Gundu Padakandala