Patents by Inventor Avinash Venkatraman Naidu

Avinash Venkatraman Naidu 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).

  • Copolymer-1, process for preparation and analytical methods thereof
    Patent number: 9029507
    Abstract: The present invention relates to analytical methods such as molecular weight determination of polypeptide, in particular Glatiramer acetate. The present invention further relates to an improved process for preparation of polypeptides or pharmaceutically acceptable salts thereof, particularly Glatiramer acetate also known as Copolymer-1. The present invention further relates to characterization of Glatiramer acetate by peptide mapping.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: May 12, 2015
    Assignee: USV Limited
    Inventors: Dhananjay Govind Sathe, Avinash Venkatraman Naidu, Subramanian Sundaram, Anindya Sibnath Bhattacharyya, Rakesh Shekhawat, Divya Lal Saksena, Sukumar Ramanujam, Sanjay Vyankatrao Patil
  • COPOLYMER-1, PROCESS FOR PREPARATION AND ANALYTICAL METHODS THEREOF
    Publication number: 20130323771
    Abstract: The present invention relates to analytical methods such as molecular weight determination of polypeptide, in particular Glatiramer acetate. The present invention further relates to an improved process for preparation of polypeptides or pharmaceutically acceptable salts thereof, particularly Glatiramer acetate also known as Copolymer-1. The present invention further relates to characterization of Glatiramer acetate by peptide mapping.
    Type: Application
    Filed: February 14, 2012
    Publication date: December 5, 2013
    Applicant: USV LIMITED
    Inventors: Dhananjay Govind Sathe, Avinash Venkatraman Naidu, Sundaram Subramanian, Anindya Sibnath Bhattacharyya, Rakesh Shekhawat, Divya Lal Saksena, Ramanujam Sukumar, Sanjay Vyankatrao Patil
  • Process For the Preparation of Highly Pure (E) N,N-Diethyl-2-Cyano-3-(3,4-Dihydroxy-5-Nitro Phenyl) Acrylamide (Entacapone)
    Publication number: 20080319226
    Abstract: A process for the preparation of highly pure (E)-N,N-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl)acrylamide (Entacapone). It comprises condensing 3,4-dihydroxy-5-nitro benzaldehyde with N,N-diethyl cyano acetamide in an organic solvent in the presence of an organic base and an acid under reflux conditions followed by distilling off the solvent under vacuum and treating the residue with a lower aliphatic carboxylic acid at 40-8O0 C. The resulting residue is extracted with a chlorinated solvent and the solvent is distilled off under vacuum. The resulting residue is extracted with an organic solvent to obtain crude N,N-diethyl-2-cyano-3-3,4-dihydroxy-5-nitrophenyl)acrylamide. The crude product N,N-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl) acrylamide formed is treated with a mixture of organic alcohol and organic acid in the molar ratio of the crude product to organic alcohol 1:5 to 15 and crude product to organic acid 1:1 to 3 under reflux conditions.
    Type: Application
    Filed: November 9, 2005
    Publication date: December 25, 2008
    Applicant: USV LIMITED
    Inventors: Venkatasubramanian Radhakrishnan Tarur, Dhananjay Govind Sathe, Nandu Baban Bhise, Avinash Venkatraman Naidu, Umesh Parashram Aher, Sachin Shivaji Patil
  • Pharmaceutical salt of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl] methyl piperidine (Donepezil)
    Patent number: 7439365
    Abstract: The present invention relates to the oxalate salt of 1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl]methyl piperidine, commonly known as Donepezil, and its method of preparation.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: October 21, 2008
    Assignee: USV, Ltd.
    Inventors: Venkatasubramanian Radhakrishnan Tarur, Dhananjay Govind Sathe, Avinash Venkatraman Naidu, Umesh Parashram Aher