Patents by Inventor Sivakumaran Meenakshisunderam

Sivakumaran Meenakshisunderam 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).

  • Extended release formulations of guaifenesin
    Publication number: 20090202633
    Abstract: The present invention relates to extended release formulations comprising expectorant. More particularly, the present invention relates to extended release formulations comprising guaifenesin. The present invention also relates to a process for the preparation of extended release formulations comprising guaifenesin.
    Type: Application
    Filed: January 2, 2009
    Publication date: August 13, 2009
    Inventors: Siva Ramakrishna Velaga, Saravanan Kannusamy, Madhu Kandukuri, Venkata Ram Mohan Rao Visinigiri, Nagaprasad Vishnubhotta, 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 the preparation of biphosphonic acids
    Patent number: 7528280
    Abstract: An improved process for bisphosphonylation of acids, substituted acids to obtain compounds with the formula using phosphorus trihalide, phosphorus acid, in presence of phenolic compounds as diluent/solvent.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: May 5, 2009
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Subba Reddy Danda, Narayan K. A. S. S. Garimella, Srinivasa Rao V. N Divvela, Ramesh Dandala, Sivakumaran Meenakshisunderam
  • process for the preparation of escitalopram
    Publication number: 20090099375
    Abstract: The present invention relates to an improved process for the preparation of Escitalopram of the Formula (I), which comprises, isolation of Diol compound as an oxalate salt, resolution of Diol compound and cyclization of resolved compound of Formula (VII). The present invention provides a process to obtain pure Diol compound by preparing its Oxalate salt, which is useful for resolution of enantiomers.
    Type: Application
    Filed: July 20, 2006
    Publication date: April 16, 2009
    Inventors: Vipin Kumar Kaushik, Umar Khan Mohammed, Sivakumaran Meenakshisunderam
  • Process for the Preparation of Florfenicol
    Publication number: 20090043131
    Abstract: The present invention relates to a method for the preparation of Florfenicol from Fluoroamine compound, namely (1R,2S)-1-[4-(methylsulfonyl)phenyl]-2-amino-3-fluoro-1-propanol (II), by reaction with dihaloacetic acid ester in an organic solvent in presence of an inorganic base.
    Type: Application
    Filed: June 12, 2006
    Publication date: February 12, 2009
    Applicant: AUROBINDO PHARMA LIMITED
    Inventors: Mallikarjuna Reddy Karuru, Arun Kumar Gupta, Sivakumaran Meenakshisunderam
  • Process for the preparation of risedronate sodium hemi-pentahydrate
    Patent number: 7485726
    Abstract: The present invention relates to an improved process for the selective crystallization of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid sodium in pure hemi-pentahydrate form of Formula (I), by first converting 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid into organic amine salt and then by replacing it with sodium salt.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: February 3, 2009
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Srinivasa Rao V. N Divvela, Lenin Racha, Sivakumaran Meenakshisunderam, Ramesh Dandala
  • Aqueous oral solution of bisphosphonic acid
    Publication number: 20090029946
    Abstract: The present invention relates to stable aqueous oral formulation of bisphosphonic acid or its pharmaceutically acceptable salts. More particularly, the present invention relates to stable aqueous oral formulation of alendronate sodium. The present invention also relates to a process for the preparation of stable aqueous oral formulation of alendronate sodium.
    Type: Application
    Filed: April 14, 2008
    Publication date: January 29, 2009
    Inventors: Ramesh Babu Batta, Umesh Nandkumar Khatavkar, Hidaytulla Shamshuddin Aga, Kishor Dattatray Deo, Sivakumaran Meenakshisunderam
  • CONTROLLED RELEASE FORMULATIONS OF AN ALPHA-ADRENERGIC RECEPTOR ANTAGONIST
    Publication number: 20080206338
    Abstract: The present invention relates to controlled release formulations comprising an alpha-adrenergic receptor antagonist. More particularly, the present invention relates to controlled release matrix formulation comprising alfuzosin hydrochloride and a combination of hydrophilic and hydrophobic polymers prepared by direct compression.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 28, 2008
    Inventors: Nagaprasad Vishnubhotla, Vinodkumar Gurunath Indure, Sindhuja Balakrishnan, Sivakumaran Meenakshisunderam
  • Liquid dosage form of acetaminophen
    Publication number: 20080085892
    Abstract: The present invention relates to a liquid dosage form comprising pharmaceutically insoluble and unpleasant active drug and liquid excipient base. In particular, the invention relates to a liquid dosage form comprising Acetaminophen and liquid excipient base as a solubilizer.
    Type: Application
    Filed: August 31, 2007
    Publication date: April 10, 2008
    Inventors: Sangeetha Kandeepan, Krishna Bhavanasi, Venkata Ram Mohan Rao Visinigiri, Nagaprasad Vishnubhotla, Sivakumaran Meenakshisunderam
  • Solid Unit Dosage Forms of 5-Ht1 Agonist
    Publication number: 20070269510
    Abstract: The present invention relates to pharmaceutical compositions of 5-HT1 agonist. More particularly, the present invention relates to uncoated tablets of sumatriptan succinate. The present invention also relates to a process for the preparation of uncoated tablets of sumatriptan succinate.
    Type: Application
    Filed: September 26, 2005
    Publication date: November 22, 2007
    Inventors: Sudarshan Nimbalkar, Kishor Deo, Hidaytulla Aga, Sivakumaran Meenakshisunderam
  • Process for the preparation of donepezil hydrochloride
    Publication number: 20070191610
    Abstract: The present invention relates to an improved process for the preparation of 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride of Formula I.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 16, 2007
    Inventors: Mahesh Nagarimadugu, Arun Gupta, Ramesh Dandala, Sivakumaran Meenakshisunderam
  • Process for the preparation of biphosphonic acids
    Publication number: 20070173645
    Abstract: An improved process for bisphosphonylation of acids, substituted acids to obtain compounds with the formula using phosphorus trihalide, phosphorus acid, in presence of phenolic compounds as diluent/solvent.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 26, 2007
    Inventors: Subba Reddy Danda, Narayan K.A.S.S. Garimella, Srinivasa Rao V.N Divvela, Ramesh Dandala, Sivakumaran Meenakshisunderam
  • Process for the preparation of risedronate sodium hemi-pentahydrate
    Publication number: 20070173484
    Abstract: The present invention relates to an improved process for the selective crystallization of 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid sodium in pure hemi-pentahydrate form of Formula (I), by first converting 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid into organic amine salt and then by replacing it with sodium salt.
    Type: Application
    Filed: January 16, 2007
    Publication date: July 26, 2007
    Inventors: Srinivasa Rao V.N Divvela, Lenin Racha, Sivakumaran Meenakshisunderam, Ramesh Dandala
  • Process for the preparation of terazosin hydrocloride dihydrate
    Publication number: 20070161791
    Abstract: The present invention relates to an improved process for the preparation of 1-(4-amino-6,7-dimethoxyquinazolin-2-yl)-4-[[(2RS)-2,3,4,5-tetrahydrofuran-2-yl]carbonyl]piperazine hydrochloride dihydrate of Formula I, through an intermediate 1-(4-amino-6,7-dimethoxyquinazolin-2-yl)-4-[[(2RS)-2,3,4,5-tetrahydrofuran-2-yl]carbonyl]piperazine hydrochloride/hydrobromide (V).
    Type: Application
    Filed: January 3, 2007
    Publication date: July 12, 2007
    Inventors: Narsimha Reddy Penthala, Anand Gopalkrishna Kamat, Sivakumaran Meenakshisunderam