Patents by Inventor Nandkumar Gaikwad

Nandkumar Gaikwad 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).

  • Publication number: 20240010618
    Abstract: The present invention relates to a process for the preparation of brivaracetam, a compound of formula I and salts thereof. The present invention also relates to a compound of formula II and a compound of formula IIA, process for its preparation and conversion thereof to brivaracetam, the compound of formula I.
    Type: Application
    Filed: December 23, 2021
    Publication date: January 11, 2024
    Inventors: Sandip Tukaram Gadge, Shrikant Prabhakar Keshav, Nandkumar Gaikwad, Rajendra Jagdhane, Sharad Gore, Ganesh Bhaskar Chaudhari, Bhavin Prabhudas Thanki, Suresh Kadam, Shekhar Bhaskar Bhirud, Venkata Raghavendra Acharyulu Palle
  • Patent number: 10858387
    Abstract: The present invention provides a process for preparation of deoxycholic acid or salt thereof; the process comprises the steps of reacting the compound of formula II to obtain a compound of formula III; the compound of formula III is converted to a compound of formula IV and the compound of formula IV is converted to deoxycholic acid. The present invention also provides a process for the purification of deoxycholic acid or salt thereof.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 8, 2020
    Assignee: GLENMARK LIFE SCIENCES LIMITED
    Inventors: Ranjeet Nair, Shekhar Bhaskar Bhirud, Nandkumar Gaikwad, Sharad R. Gore, Rajendra C. Jagdhane, Sandip Gadge, Sukumar Sinha
  • Publication number: 20200140478
    Abstract: The present invention provides a process for preparation of deoxycholic acid or salt thereof; the process comprises the steps of reacting the compound of formula II to obtain a compound of formula III; the compound of formula III is converted to a compound of formula IV and the compound of formula IV is converted to deoxycholic acid. The present invention also provides a process for the purification of deoxycholic acid or salt thereof.
    Type: Application
    Filed: May 21, 2018
    Publication date: May 7, 2020
    Inventors: Ranjeet Nair, Shekhar Bhasxar Bhirud, Nandkumar Gaikwad, Sharad R. Gore, Rajendra C. Jagdhane, Sandip Gadge, Sukumar Sinha
  • Patent number: 10556877
    Abstract: The present invention relates to a process for the preparation of amorphous dapagliflozin. The present invention relates to 2,3-butanediol solvate of dapagliflozin and process for its preparation.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: February 11, 2020
    Assignee: Glenmark Life Sciences Limited
    Inventors: Shekhar Bhaskar Bhirud, Kumar Hari Bhushan, Raghu Ram Suraparaju, Nandkumar Gaikwad, Sharad Gore, Rajendra Jagdhane, Mandar Kulkarni
  • Publication number: 20180127391
    Abstract: The present invention relates to a process for the preparation of amorphous dapagliflozin. The present invention relates to 2,3-butanediol solvate of dapagliflozin and process for its preparation.
    Type: Application
    Filed: May 4, 2016
    Publication date: May 10, 2018
    Inventors: Shekhar Bhaskar Bhirud, Kumar Hari BHUSHAN, Raghu Ram SURAPARAJU, Nandkumar GAIKWAD, Sharad GORE, Rajendra JAGDHANE, Mandar KULKARNI
  • Publication number: 20150329546
    Abstract: The present invention refers to a new crystalline form of ticagrelor, a process for the preparation thereof, pharmaceutical compositions comprising said new crystalline form of ticagrelor, and the use of the new crystalline form of ticagrelor as medicament
    Type: Application
    Filed: November 29, 2012
    Publication date: November 19, 2015
    Inventors: Krishnadatt SHARMA, Nandkumar GAIKWAD, Nikhil TRIVEDI, Nitin Sharadchandra PRADHAN
  • Publication number: 20120053246
    Abstract: Provided herein is a highly pure arformoterol tartrate or an amorphous form thereof substantially free of desformyl impurity, 2-hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]aniline, process for the preparation thereof, and pharmaceutical compositions comprising the highly pure arformoterol tartrate substantially free of the desformyl impurity.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 1, 2012
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Anant Kishanrao Jagtap, Nandkumar Gaikwad, Nikhil Trivedi, Nitin Sharadchandra Pradhan
  • Publication number: 20110313199
    Abstract: Provided herein are improved, convenient and industrially advantageous processes for the preparation of N-[2-hydroxy-5-[(1R)-1-hydroxy-2-[[(1R)-2-(4-methoxyphenyl)-1-methylethyl]amino]ethyl]phenyl]formamide (Arformoterol) or a pharmaceutically acceptable salt thereof, in high yield and purity. Provided further herein is an improved and industrially advantageous process for the preparation of a substantially enantiomerically pure arformoterol intermediate, (R)-4-methoxy-?-methyl-N-(phenylmethyl)benzeneethanamine.
    Type: Application
    Filed: December 28, 2009
    Publication date: December 22, 2011
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Girish Dixit, Nandkumar Gaikwad, Nitin Sharadchandra Pradhan
  • Publication number: 20110021547
    Abstract: Described is a highly stable crystalline form of bosentan having a water content in the range of about 3-4% by weight, based on the total weight of the bosentan, (bosentan crystalline form A5), a process for preparation thereof, and pharmaceutical compositions comprising the bosentan crystalline form A5. Provided also herein is a bosentan impurity, p-tert-butyl-N[6-hydroxy-5-(2-methoxyphenoxy)-2-(2-pyrimidinyl)-4-pyrimidinyl]benzenesulfonamide (deshydroxyethyl bosentan impurity), and process for preparing and isolating thereof. Further provided are highly pure bosentan or a pharmaceutically acceptable salt thereof substantially free of deshydroxyethyl bosentan and bosentan dimer impurities, process for the preparation thereof, and pharmaceutical compositions comprising solid particles of highly pure bosentan or a pharmaceutically acceptable salt thereof, wherein 90 volume-percent of the particles (D90) have a size of less than about 300 microns.
    Type: Application
    Filed: January 22, 2009
    Publication date: January 27, 2011
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Girish Dixit, Nandkumar Gaikwad, Hima Prasad Naidu, Nitin Sharadchandra Pradhan, Jon Valgeirsson
  • Publication number: 20110014246
    Abstract: Disclosed herein is a novel and stable amorphous form of arformoterol L-(+)-tartrate, a process for its preparation, pharmaceutical compositions comprising amorphous arformoterol L-(+)-tartrate, and methods of treating with amorphous arformoterol L-(+)-tartrade.
    Type: Application
    Filed: February 27, 2009
    Publication date: January 20, 2011
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Girish Dixit, Nandkumar Gaikwad, Nitin Sharadchandra Pradhan, Jon Valgeirsson
  • Publication number: 20110014291
    Abstract: Disclosed herein are novel polymorphic forms of bosentan, processes for preparation, pharmaceutical compositions, and method of treating thereof.
    Type: Application
    Filed: October 13, 2008
    Publication date: January 20, 2011
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Girish Dixit, Nandkumar Gaikwad, Hima Prasad Naidu, Nitin Sharadchandra Pradhan, Jon Valgeirsson