Patents by Inventor Neera Tewari

Neera Tewari 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).

  • TOPICAL SILIBININ FORMULATIONS AND USES THEREFOR
    Publication number: 20180280343
    Abstract: Topical compositions containing silibinin with enhanced silibinin penetration into the dermis. The compositions are useful for the treatment or prevention of skin damage or disorders.
    Type: Application
    Filed: October 3, 2016
    Publication date: October 4, 2018
    Inventors: Theresa PACHECO, Thomas ANCHORDOQUY, Rajesh AGARWAL, Neera TEWARI-SINGH
  • PROCESS FOR PREPARING CEFTAROLINE SALTS OR HYDRATES THEREOF
    Publication number: 20140350240
    Abstract: The present invention relates to a process for the preparation of ceftaroline salts or hydrates thereof.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 27, 2014
    Inventors: Kallimulla Mohammad, Bishwa Prakash Rai, Neera Tewari
  • Process for the preparation of carbapenem compounds
    Patent number: 8841444
    Abstract: The present invention relates to a process for the preparation of carbapenem compound of Formula (I), wherein P1 is hydrogen or a carboxyl protecting group, P3 is hydrogen or a hydroxyl protecting group, R1 is C1-3 alkyl, and A is selected from a group consisting of a) Formula (II), b) Formula (III), c) Formula (IV), d) Formula (V), e) Formula (VI), f) Formula (VII), wherein P2 is hydrogen or an amino protecting group, R2 and R3 may be same or different and are hydrogen, C1-5 alkyl, optionally substituted aryl, or optionally substituted heteroaryl, and X1 is O or S, or its stereoisomers, or salts thereof.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: September 23, 2014
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Neera Tewari, Shailendra Kumar Singh, Brij Kishore Mishra, Saraswati Rani
  • Processes for the preparation of cinacalcet
    Patent number: 8759586
    Abstract: The present invention provides processes and intermediates for preparing cinacalcet base and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: June 24, 2014
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Sayeed Mukhtar, Dinesh Shashidharan Nair, Roshan Ramesh Medhane, Nitin Maheshwari, Hashim Nizar Poovanathil Nagoor Meeran, Neera Tewari, Mohan Prasad
  • Intermediates for the preparation of HMG-CoA reductase inhibitors
    Patent number: 8536330
    Abstract: The present invention provides a process for preparing novel intermediates of Formula wherein, R1 can be hydrogen, C1-C4 alkyl, halogen, nitro, hydroxy, or C1-C4 alkoxy; Rx can be selected from hydrophobic residue of HMG-CoA reductase inhibitors; which can be effectively used for the preparation of HMG-CoA reductase inhibitors such as rosuvastatin and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 17, 2013
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Vishwesh Pravinchandra Pandya, Santosh Richhariya, Prabhakar Divya, Hashim Nizar Poovanathil Nagoor Meeran, Neera Tewari
  • NOVEL INTERMEDIATES FOR THE PREPARATION OF HMG-CoA REDUCTASE INHIBITORS
    Publication number: 20130150579
    Abstract: The present invention provides a process for preparing novel intermediates of Formula wherein, R1 can be hydrogen, C1-C4 alkyl, halogen, nitro, hydroxy, or C1-C4 alkoxy; Rx can be selected from hydrophobic residue of HMG-CoA reductase inhibitors; which can be effectively used for the preparation of HMG-CoA reductase inhibitors such as rosuvastatin and pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: April 21, 2011
    Publication date: June 13, 2013
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Vishwesh Pravinchandra Pandya, Santosh Richhariya, Prabhakar Divya, Hashim Nizar Poovanathil Nagoor Meeran, Neera Tewari
  • PROCESSES FOR THE PREPARATION OF CINACALCET
    Publication number: 20120309842
    Abstract: The present invention provides processes and intermediates for preparing cinacalcet base and pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: September 16, 2010
    Publication date: December 6, 2012
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Sayeed Mukhtar, Dinesh Shashidharan Nair, Roshan Ramesh Medhane, Nitin Maheshwari, Hashim Nizar Poovanathil Nagoor Meeran, Neera Tewari, Mohan Prasad
  • PROCESS FOR THE PREPARATION OF CARBAPENEM COMPOUNDS
    Publication number: 20110224426
    Abstract: The present invention relates to a process for the preparation of carbapenem compound of Formula (I), wherein P1 is hydrogen or a carboxyl protecting group, P3 is hydrogen or a hydroxyl protecting group, R1 is C1-3 alkyl, and A is selected from a group consisting of a) Formula (II), b) Formula (III), c) Formula (IV), d) Formula (V), e) Formula (VI), f) Formula (VII), wherein P2 is hydrogen or an amino protecting group, R2 and R3 may be same or different and are hydrogen, C1-5 alkyl, optionally substituted aryl, or optionally substituted heteroaryl, and X1 is O or S, or its stereoisomers, or salts thereof.
    Type: Application
    Filed: July 30, 2009
    Publication date: September 15, 2011
    Inventors: Neera Tewari, Shailendra Kumar Singh, Brij Kishore Mishra, Saraswati Rani
  • PROCESS FOR THE PREPARATION OF SUBSTITUTED 1,3-OXATHIOLANES
    Publication number: 20100311970
    Abstract: The present invention relates to a process for the preparation of substituted 1,3-oxathiolanes. The present invention specifically relates to a process for the preparation of lamivudine.
    Type: Application
    Filed: April 30, 2008
    Publication date: December 9, 2010
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Neera Tewari, Dinesh Shashidharan Nair, Hashim Nizar Poovanathil Nagoor Meeran, Mohan Prasad
  • PROCESS AND INTERMEDIATES FOR THE PREPARATION OF SUBSTITUTED 1,3-OXATHIOLANES, ESPECIALLY LAMIVUDINE
    Publication number: 20100311961
    Abstract: The present invention relates to process and intermediates for the preparation of substituted 1,3-oxathiolanes. The present invention specifically relates to a process for the preparation of lamivudine.
    Type: Application
    Filed: April 30, 2008
    Publication date: December 9, 2010
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Dinesh Shashidharan Nair, Bishwa Prakash Rai, Hashim Nizar Poovanathil Nagoor Meeran, Neera Tewari
  • PROCESS FOR THE PREPARATION OF PANTOPRAZOLE SODIUM AND PANTOPRAZOLE SODIUM SESQUIHYDRATE
    Publication number: 20100210847
    Abstract: The present invention relates to a process for the preparation of pantoprazol sodium sesquihydrate of formula (I) and pantoprazole sodium.
    Type: Application
    Filed: July 17, 2008
    Publication date: August 19, 2010
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Ashish M. Trivedi, Shailendra Kumar Singh, Neera Tewari, Mohan Prasad
  • Process for the preparation of imipenem
    Patent number: 7462712
    Abstract: The present invention relates to an improved process for the preparation of imipenem comprising reacting a bicyclo ketone precursor of the Formula II, wherein R is a protecting group, with a phosphorohalidate in the presence of a base and a catalytic amount of dialkylaminopyridine.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: December 9, 2008
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Yatendra Kumar, Neera Tewari, Bishwa Prakash Rai
  • Process for the preparation of crystalline imipenem
    Patent number: 7332600
    Abstract: The present invention relates to a cost effective and industrially advantageous process for the preparation of imipenem of high purity, which comprises dissolving crude imipenerm in warm water to which some base has been added to obtain a solution, subjecting the resultant solution to activated carbon treatment, and adding an organic solvent to precipitate imipienem monohydrate as a crystalline product.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: February 19, 2008
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Bishwa Prakash Rai, Neera Tewari, Yatendra Kumar
  • PROCESS FOR THE PREPARATION OF ARIPIPRAZOLE
    Publication number: 20070238876
    Abstract: The present invention provides a process for the preparation of aripiprazole of Formula I comprising condensing a carbostyril compound of Formula II wherein X is a leaving group with dichlorophenyl piperazine or its salts of Formula III wherein Y is an organic or inorganic acid in water in the presence of an organic base.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 11, 2007
    Inventors: Neera Tewari, Hashim Nizar, Bishwa Rai
  • PROCESSES FOR THE PREPARATION OF CARBAPENEMS
    Publication number: 20070197781
    Abstract: The invention relates to processes for the preparation of carbapenems. More particularly, it relates to a process for the preparation of meropenem.
    Type: Application
    Filed: July 31, 2006
    Publication date: August 23, 2007
    Inventors: Neera Tewari, Avinash Mane, Bishwa Rai, Mohan Prasad
  • Process for the isolation of crystalline imipenem
    Patent number: 7241885
    Abstract: The present invention relates to a cost effective and industrially advantageous process for the preparation of imipenem of high purity comprising the steps of treating an aqueous solution containing imipenem with an organic solvent, wherein the imipenem is not lyophilized; and isolating the pure crystalline imipenem monohydrate from the reaction mixture thereof.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: July 10, 2007
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Yatendra Kumar, Neera Tewari, Ram Chander Aryan, Bishwa Prakash Rai
  • Sulphur-containing oils for controlling plant pathogens and stimulating nutrient uptake
    Publication number: 20070072945
    Abstract: The present invention relates to sulphur-containing oils, their preparation, and their use in controlling/killing plant pathogens and stimulating a plant's uptake of essential elements from the soil and to act as a soil pH adjuster.
    Type: Application
    Filed: March 21, 2004
    Publication date: March 29, 2007
    Inventors: Yatendra Kumar, Neera Tewari, Shailendra Singh, Bishwa Rai
  • Monohydrate solvates of loracarbef
    Publication number: 20060205938
    Abstract: This invention relates to monohydrate solvates of loracarbef. The invention also relates to processes for preparing solvates of loracarbef, crystalline monohydrate of loracarbef from said solvates and pharmaceutical compositions that include the crystalline monohydrate of loracarbef.
    Type: Application
    Filed: November 21, 2003
    Publication date: September 14, 2006
    Inventors: Yatendra Kumar, Neera Tewari, Hashim Nizar Poovanathi Meeran, Bishwa Rai, Sailendra Singh
  • Process for the preparation of (z)-isomer enriched 7-amino-3-propen-1-yl-3-cephem-4-carboxylic acid
    Publication number: 20060173176
    Abstract: The invention relates to a process for enrichment of the (Z)-isomer amount in a mixture of the (Z)- and (E)-isomers of 7-amino-3-(1-propen-1-yl)-3-cephem-4-carboxylic acid.
    Type: Application
    Filed: October 8, 2003
    Publication date: August 3, 2006
    Inventors: Yatendra Kumar, Neera Tewari, Shailendra Singh, Bishwa Rai
  • Process for the preparation of crystalline N-formimidoyl thienamycin monohydrate (imipenem monohydrate)
    Patent number: 7078534
    Abstract: The present invention relates to a cost effective and commercially viable process for the preparation of crystalline N-formimidoyl thienamycin monohydrate (Imipenem monohydrate) of Formula I.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: July 18, 2006
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Yatendra Kumar, Neera Tewari, Ran Chander Aryan, Bishwa Prakash Rai, Seema Ahuja