Patents by Inventor Shubhra Acharyya Shankha

Shubhra Acharyya Shankha 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).

  • Catalyst for selective dehydrogenation / oxidative dehydrogenation reactions and process for the preparation thereof
    Patent number: 9908101
    Abstract: The present invention provides a process and catalyst for the direct and selective conversion of ethane to ethylene. The process provides a direct single step vapor phase selective dehydrogenation/oxidative dehydrogenation of ethane to ethylene over Mo supported nanocrystalline TiO2. The process provides ethane conversion of 65-96% and selectivity of ethylene up to 100%. The process may be conducted in the presence or absence of oxygen.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 6, 2018
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajaram Bal, Bipul Sarkar, Rajib Kumar Singha, Chandrashekar Pendem, Shubhra Acharyya Shankha, Shilpi Ghosh
  • Catalyst for single step conversion of glycerol to acrylic acid and process for the preparation thereof
    Patent number: 9409847
    Abstract: The present invention provides a process and a solid catalyst for oxydehydration of glycerol to acrylic acid with H2O2 under mild experimental condition at atmospheric pressure. The process provides a single step liquid phase selective oxidation glycerol to acrylic acid over nanocrystalline Cu supported ?-MnO2 catalyst. The process provides glycerol conversion of 20-78% and selectivity of acrylic acid up to 86%.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: August 9, 2016
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajaram Bal, Bipul Sarkar, Rajib Kumar Singha, Chandrashekar Pendem, Shubhra Acharyya Shankha, Shilpi Ghosh
  • Process for the selective hydroxylation of benzene with molecular oxygen
    Patent number: 8772552
    Abstract: The present invention provides an improved process for the selective hydroxylation of benzene. The process provides a direct single step selective vapor phase hydroxylation of benzene to phenol using molecular oxygen (air) over Cu—Cr oxide catalysts. The process provides benzene conversion of 10 to 45% and selectivity for phenol up to 100%.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: July 8, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajaram Bal, Shubhra Acharyya Shankha, Shilpi Ghosh, Bipul Sarkar, Karan Singh Rawat, Chandrashekar Pendem
  • CATALYST FOR SINGLE STEP CONVERSION OF GLYCEROL TO ACRYLIC ACID AND PROCESS FOR THE PREPARATION THEREOF
    Publication number: 20140128632
    Abstract: The present invention provides a process and a solid catalyst for oxydehydration of glycerol to acrylic acid with H2O2 under mild experimental condition at atmospheric pressure. The process provides a single step liquid phase selective oxidation glycerol to acrylic acid over nanocrystalline Cu supported ?-MnO2 catalyst. The process provides glycerol conversion of 20-78% and selectivity of acrylic acid up to 86%.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 8, 2014
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: RAJARAM BAL, BIPUL SARKAR, RAJIB KUMAR SINGHA, CHANDRASHEKAR PENDEM, SHUBHRA ACHARYYA SHANKHA, SHILPI GHOSH
  • Catalyst for Selective Dehydrogenation / Oxidative Dehydrogenation Reactions and Process for the Preparation Thereof
    Publication number: 20140128653
    Abstract: The present invention provides a process and catalyst for the direct and selective conversion of ethane to ethylene. The process provides a direct single step vapor phase selective dehydrogenation/oxidative dehydrogenation of ethane to ethylene over Mo supported nanocrystalline TiO2. The process provides ethane conversion of 65-96% and selectivity of ethylene up to 100%. The process may be conducted in the presence or absence of oxygen.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 8, 2014
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: RAJARAM BAL, BIPUL SARKAR, RAJIB KUMAR SINGHA, CHANDRASHEKAR PENDEM, SHUBHRA ACHARYYA SHANKHA, SHILPI GHOSH
  • Process for the preparation of Cu—Cr oxides for selective oxidation reactions
    Patent number: 8697916
    Abstract: The present invention provides a process for the preparation of Cu—Cr oxides by hydrothermal synthesis method using hydrazine as a reducing agent and cetyltrimethylammonium bromide as a surfactant and these oxides are very active for selective oxidation of benzene, toluene and ethylbenzene to produce phenol, benzaldehyde and acetophenone, respectively.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: April 15, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajaram Bal, Bipul Sarkar, Shubhra Acharyya Shankha, Shilpi Ghosh, Chandrashekar Pendem, Kumar Jagdish