Patents by Inventor Dharmeshkumar Arvindbhai Patel

Dharmeshkumar Arvindbhai Patel 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 Manufacturing Optically Pure (R) or (S)-5-(2-Aminopropyl)-2-Methoxybenzene Sulfonamide
    Publication number: 20080033208
    Abstract: The invention relates to an improved process for the manufacture of enantiomerically pure R-(+) or S-(+)-5-(2-amino-propyl)-2-methoxybenzene sulfonamide by resolution of (R,S)-5-(2-aminopropyl)-2-methoxybenzene sulfonamide with D-(?) or L-(+)-tartaric acid to form a mixture of diastereomeric salts, separating the diastereomeric salts by kinetic resolution in a mixture of solvent systems of the kind such as herein described, in the specified time and temperature range to provide said R-(?)-5-(2-aminopropyl)-2-methoxybenzene sulfonamide or S-(+)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide with excellent chiral purity more than 99.9%.
    Type: Application
    Filed: February 22, 2005
    Publication date: February 7, 2008
    Inventors: Dilipkumar Chandubhai Ramolia, Dnyaneshwar Sitaram Patil, Dharmeshkumar Arvindbhai Patel, Rajivkumar Sharma, Virendra Kumar Agarwal