Patents by Inventor Mahesh Rupapara

Mahesh Rupapara 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 enantiomerically pure (r) or (s)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide
    Publication number: 20060173214
    Abstract: The invention relates to a process for the manufacture of optically pure (R) or (S)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide with D-i.e. (2S, 3S) or L-i.e. (2R, 3R)-tartaric acid to form a mixture of diastereomeric salts, separating the diastereomeric salts by fractional crystallization in a mixture of solvent systems and at the specified temperature range and contacting the individual salts so separated with a base to provide said R-(?)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide or S-(+)-5-(2-amino propyl)-2-methoxybenzenesulfonamide.
    Type: Application
    Filed: December 26, 2002
    Publication date: August 3, 2006
    Inventors: Sushil Dubey, Dharmeshkumar Patel, Dhimant Patel, Mahesh Rupapara, Virendra Agarwal, Kanwal Pandita, Pankaj Patel