Patents by Inventor Amit Anant Chavan

Amit Anant Chavan 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 (S)-Pregabalin
    Publication number: 20100312010
    Abstract: The present invention provides a process for resolving racemic pregabalin to S-pregabalin by using a chiral acid to form a pregabalin salt, purifying the salt to obtain a purified S- pregabalin salt then neutralizing the salt to obtain S-pregabalin having good chiral purity.
    Type: Application
    Filed: December 18, 2008
    Publication date: December 9, 2010
    Applicant: WATSON PHARMA PRIVATE LIMITED
    Inventors: Amit Anant Chavan, Shashikant Balasaheb Padwal, Ashutosh Vijay Joshi, Manjunath Narayan Bhanu
  • Process For Preparation of Paliperidone
    Publication number: 20100311969
    Abstract: The present invention relates to a process for preparation and purification of 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one, also known as paliperidone or 9-hydroxy risperidone. The invention also relates to the preparation of intermediates useful in the process.
    Type: Application
    Filed: February 5, 2009
    Publication date: December 9, 2010
    Applicant: WATSON PHARMA PRIVATE LIMITED
    Inventors: Amit Anant Chavan, Ashutosh Vijay Joshi, Manjunath Narayan Bhanu