Patents by Inventor Kamlesh Sawant

Kamlesh Sawant 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).

  • Donepezil Hydrochloride Form VI
    Publication number: 20070123565
    Abstract: The present invention discloses a novel, stable polymorph of 1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl] methyl piperidine hydrochloride commonly known as Donepezil hydrochloride. Further the present invention discloses a process for producing Donepezil HCl amorphous and its polymorph Form (VI).
    Type: Application
    Filed: November 8, 2006
    Publication date: May 31, 2007
    Inventors: Umesh Aher, Venkatasubramanian Tarur, Dhananjay Sathe, Avinash Naidu, Kamlesh Sawant
  • Rapid resolution process of clopidogrel base and a process for preparation of clopidogrel bisulfate polymorph-form I
    Publication number: 20060074242
    Abstract: The present invention discloses a rapid resolution process of racemic clopidogrel base followed by conversion of the resolved (S) isomer to crystalline Clopidogrel bisulfate Form I. The invention also discloses novel racemization process of the unwanted (R) isomer of clopidogrel base. The invention further discloses an improved process for preparation of acid addition salts of clopidogrel.
    Type: Application
    Filed: June 10, 2005
    Publication date: April 6, 2006
    Inventors: Manoj Madhukarrao Deshpande, V.R. Tarur, Dhananjay Govind Sathe, Harish Kashniath Mondkar, Kamlesh Sawant, Tushar Anil Naik
  • Novel process for preparation of clopidogrel bisulfate polymorph - Form I
    Publication number: 20060047121
    Abstract: A process for making Clopidogrel Bisulfate Form I which comprises dissolving Clopidogrel Bisulfate Form II in a solublizing solvent at room temperature to form a solution; adding an anti-solvent to the said solution till turbid; stirring the said turbid solution; collecting the precipitated solid and drying the final solid product, form I.
    Type: Application
    Filed: October 4, 2004
    Publication date: March 2, 2006
    Inventors: Kamlesh Sawant, Venkatasubramanian Tarur, Dhananjay Sathe
  • Polymorph of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-y1] methyl piperidine hydrochloride (Donepezil hydrochloride) and a process for producing thereof
    Publication number: 20050272775
    Abstract: The present invention discloses a novel, stable polymorph of 1-benzyl-4[(5,6-dimethoxy-1-indanone)-2-yl]methyl piperidine hydrochloride commonly known as Donepezil hydrochloride. Further the present invention discloses a process for producing Donepezil HCl amorphous and its polymorph Form (VI).
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Inventors: Umesh Aher, Venkatasubramanian Tarur, Dhananjay Sathe, Avinash Naidu, Kamlesh Sawant