Patents by Inventor Smita Girish Kavishwar

Smita Girish Kavishwar 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 eszopiclone
    Patent number: 7786304
    Abstract: The invention relates to a process for making 6-(5-chloro-2-pyridinyl)-6,7-dihydro-7-oxo-5H-pyrrolo-[3,4-b]pyrazin-5-yl-4-methyl piperazine-1-carboxylate, also known as zopiclone. The invention further describes an effective method for resolving zopiclone into its enantiomers (eszopiclone and (R)-zopiclone) and also provides a method of recycling of (R)-zopiclone.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: August 31, 2010
    Assignee: Centaur Pharmaceutical Pvt. Ltd.
    Inventors: Shrikant Dattatraya Sawant, Anil Mahadev Naik, Girish Arvind Kavishwar, Smita Girish Kavishwar
  • Process for the preparation of eszopiclone
    Publication number: 20080146800
    Abstract: The invention relates to a process for making of 6-(5-chloro-2-pyridinyl)-6,7-dihydro-7-oxo-5H-pyrrolo-[3,4-b] pyrazin-5-yl-4-methyl piperazine-1-carboxylate, also known as zopiclone. The invention further describes an effective method for resolving of zopiclone into its enantiomers (eszopiclone and (R)-zopiclone) and also provides a method of recycling of (R)-zopiclone.
    Type: Application
    Filed: November 6, 2007
    Publication date: June 19, 2008
    Inventors: Shrikant Dattatraya Sawant, Anil Mahadev Naik, Girish Arvind Kavishwar, Smita Girish Kavishwar