Patents by Inventor Rahul Karde

Rahul Karde 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).

  • Tramadol recovery process
    Patent number: 7470816
    Abstract: A process for the resolution of isomeric tramadol mixtures comprising: providing a purification stock comprising both cis and trans tramadol; contacting the purification stock with an acid under conditions effective to form an acid salt of the cis and trans tramadol in the purification stock; and separating the cis tramadol acid salt from the trans tramadol to obtain a purified cis tramadol acid salt; and optionally converting the cis tramadol acid salt to cis tramadol or to a pharmaceutically active salt thereof.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: December 30, 2008
    Assignee: IPAC Laboratories Limited
    Inventors: Ashok Kumar, Suneel Yeshwant Dike, Satish Rajanikant Soudagar, Chirag Hasmukh Shah, Sandeep Madhavrao Burudkar, Prashant Gautam, Byju Nellithanath Thankachen, Ashvini Saxena, Manavalan Saravanan, Gunjan Pramod Pathak, Virendra Pal, Rahul Karde, Jaysingh Gehlot
  • Tramadol recovery process
    Publication number: 20070112074
    Abstract: A process for the resolution of isomeric tramadol mixtures comprising: providing a purification stock comprising both cis and trans tramadol; contacting the purification stock with an acid under conditions effective to form an acid salt of the cis and trans tramadol in the purification stock; and separating the cis tramadol acid salt from the trans tramadol to obtain a purified cis tramadol acid salt; and optionally converting the cis tramadol acid salt to cis tramadol or to a pharmaceutically active salt thereof.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 17, 2007
    Inventors: Ashok Kumar, Suneel Dike, Satish Soudagar, Chirag Shah, Sandeep Burudkar, Prashant Gautam, Byju Thankachen, Ashvini Saxena, Manavalan Saravanan, Gunjan Pathak, Virendra Pal, Rahul Karde, Jaysingh Gehlot