Patents by Inventor Neelakandan Kaliaperumal

Neelakandan Kaliaperumal 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 preparation of zolmitriptan
    Patent number: 9006453
    Abstract: The present invention provides a convenient and industrially viable process for preparation of Zolmitriptan (I) having desired purity. The invention specifically relates to a method for isolating (S)-4-(4-hydrazinobenzyl)-1,3-oxazolidin-2-one hydrochloride (IIIa) of desired purity by separating the undesired inorganic side products such as stannous hydroxide by manipulation of pH at different stages and finally treating with N,N-dimethylamino butyraldehyde diethyl acetal in an acidic medium to provide Zolmitriptan (I) conforming to regulatory specifications.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: April 14, 2015
    Assignee: Emcure Pharmaceuticals Limited
    Inventors: Mukund Keshav Gurjar, Neelakandan Kaliaperumal, Pravin Prabhakar Ahirrao, Raghuramireddy Baireddy, Prabhakaran Balasubramanian, Srinivas Nandala, Prasad Pandurang Panchabhai, Samit Satish Mehta
  • PROCESS FOR PREPARATION OF ZOLMITRIPTAN
    Publication number: 20140228582
    Abstract: The present invention provides a convenient and industrially viable process for preparation of Zolmitriptan (I) having desired purity. The invention specifically relates to a method for isolating (S)-4-(4-hydrazinobenzyl)-1,3-oxazolidin-2-one hydrochloride (IIIa) of desired purity by separating the undesired inorganic side products such as stannous hydroxide by manipulation of pH at different stages and finally treating with N,N-dimethylamino butyraldehyde diethyl acetal in an acidic medium to provide Zolmitriptan (I) conforming to regulatory specifications.
    Type: Application
    Filed: August 27, 2012
    Publication date: August 14, 2014
    Applicant: EMCURE PHARMACEUTICALS LIMITED
    Inventors: Mukund Keshav Gurjar, Neelakandan Kaliaperumal, Pravin Prabhakar Ahirrao, Raghuramireddy Baireddy, Prabhakaran Balasubramanian, Srinivas Nandala, Prasad Pandurang Panchabhai, Samit Satish Mehta