Patents by Inventor Nayana Tushar Nivangune

Nayana Tushar Nivangune 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 synthesis of aromatic carbamates
    Patent number: 10703714
    Abstract: The present invention discloses a process for the synthesis of aromatic carbamates from amine with dialkyl carbonate in the presence of binary or ternary mixed metal oxide catalyst. The present invention further discloses the yield of said aromatic carbamate in the range of 60 to 99%. Further, the ratio of amine to dialkyl carbonate is in the range of 1:2 to 1:30.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 7, 2020
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Ashutosh Anant Kelkar, Nayana Tushar Nivangune, Vilas Hari Rane
  • A PROCESS FOR THE SYNTHESIS OF AROMATIC CARBAMATES
    Publication number: 20200148631
    Abstract: The present invention discloses a process for the synthesis of aromatic carbamates from amine with dialkyl carbonate in the presence of binary or ternary mixed metal oxide catalyst. The present invention further discloses the yield of said aromatic carbamate in the range of 60 to 99%. Further, the ratio of amine to dialkyl carbonate is in the range of 1:2 to 1:30.
    Type: Application
    Filed: May 25, 2018
    Publication date: May 14, 2020
    Inventors: Ashutosh Anant KELKAR, Nayana Tushar NIVANGUNE, Vilas Hari RANE
  • Continuous Flow Process For The Preparation Of Sulphoxide Compounds
    Publication number: 20120203003
    Abstract: A continuous micromixer based process for the synthesis of sulphoxide compounds with a reaction time of less than or equal one minute is disclosed. The process shows selectivity of >95% towards the sulphoxide compounds.
    Type: Application
    Filed: January 6, 2012
    Publication date: August 9, 2012
    Inventors: Amol Arvind Kulkarni, Ramesh Anna Joshi, Rohini Ramesh Joshi, Nayana Tushar Nivangune, Manisha Abhiman Jagtap