Patents by Inventor Sreekuttan Maraveedu Unni

Sreekuttan Maraveedu Unni 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 preparation of PBI based membrane electrode assembly (MEA) with improved fuel cell performance and stability
    Patent number: 10361446
    Abstract: The present invention discloses a process for the preparation of poly-benzimidazole (PBI) based membrane electrode assembly (MEA) with improved fuel cell performance and stability. It discloses a simple strategy to overcome the leaching of phosphoric acid (PA) from the membrane during fuel cell operation by an in-situ Current-Voltage (I-V) assisted doping of membrane with PA. The invention provides an improved method for the preparation of membrane electrode assembly (MEA) wherein said MEA possess high stability and improved fuel cell performance achieved by overcoming the leaching of phosphoric acid during cell operation.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: July 23, 2019
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Sreekumar Kurungot, Rajith Illathvalappil, Siddheshwar Navanath Bhange, Sreekuttan Maraveedu Unni
  • Process for the preparation of nitrogen doped carbon nanohorns for oxygen reduction electrocatalysis
    Patent number: 10218006
    Abstract: Nitrogen doped carbon nanohorns function as efficient metal-free oxygen reduction electrocatalysts for anion exchange membrane fuel cells. The disclosure relates to a process for the preparation of nitrogen doped carbon nanohorns with enhanced conductivity and improved surface area.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 26, 2019
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sreekumar Kurungot, Sreekuttan Maraveedu Unni, Sarath Ramadas
  • Process for the synthesis of nitrogen-doped carbon electro-catalyst
    Patent number: 9899687
    Abstract: The present invention discloses a process for the synthesis of nitrogen-doped carbon electrocatalyst with good electrochemical stability and fuel tolerance for oxygen reduction reaction (ORR) by pyrolysis of protein-rich pulse flour cooked with SiO2 nanoparticles.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: February 20, 2018
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Rohan Gokhale, Sreekuttan Maraveedu Unni, Kurungot Sreekumar, Satishchandra Balkrishna Ogale
  • Process for the preparation of membrane electrode assemblies (MEAs)
    Patent number: 9490488
    Abstract: PBI-based MEAs for high temperature Polymer Electrolyte Membrane Fuel Cell (PEMFC) were prepared by direct hot pressing of catalyst layer on Teflon sheets on to both sides of phosphoric acid doped PBI membrane (decal transfer). These MEAs show two times higher performance compared to the MEAs prepared by normal brush coating method on GDL at an operating temperature of 160° C.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: November 8, 2016
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Vijayamohanan Kunju Krishna Pillai, Ulhas Kanhaiyalal Kharul, Sreekumar Kurungot, Harshal Dilip Chaudhari, Sreekuttan Maraveedu Unni, Bipinlal Unni, Husain Noman Kagalwala
  • A PROCESS FOR THE PREPARATION OF PBI BASED MEMBRANE ELECTRODE ASSEMBLY (MEA) WITH IMPROVED FUEL CELL PERFORMANCE AND STABILITY
    Publication number: 20160315343
    Abstract: The present invention discloses a process for the preparation of poly-benzimidazole (PBI) based membrane electrode assembly (MEA) with improved fuel cell performance and stability. It discloses a simple strategy to overcome the leaching of phosphoric acid (PA) from the membrane during fuel cell operation by an in-situ Current-Voltage (I-V) assisted doping of membrane with PA. The invention provides an improved method for the preparation of membrane electrode assembly (MEA) wherein said MEA possess high stability and improved fuel cell performance achieved by overcoming the leaching of phosphoric acid during cell operation.
    Type: Application
    Filed: December 9, 2014
    Publication date: October 27, 2016
    Inventors: Sreekumar KURUNGOT, Rajith ILLATHVALAPPIL, Siddheshwar Navanath BHANGE, Sreekuttan Maraveedu UNNI
  • A PROCESS FOR THE PREPARATION OF NITROGEN DOPED CARBON NANOHORNS FOR OXYGEN REDUCTION ELECTROCATALYSIS
    Publication number: 20160240861
    Abstract: Nitrogen doped carbon nanohorns function as efficient metal-free oxygen reduction electrocatalysts for anion exchange membrane fuel cells. The disclosure relates to a process for the preparation of nitrogen doped carbon nanohorns with enhanced conductivity and improved surface area.
    Type: Application
    Filed: October 22, 2014
    Publication date: August 18, 2016
    Inventors: Sreekumar KURUNGOT, Sreekuttan MARAVEEDU UNNI, Sarath RAMADAS
  • PROCESS FOR THE SYNTHESIS OF NITROGEN-DOPED CARBON ELECTRO-CATALYST
    Publication number: 20160197357
    Abstract: The present invention discloses a process for the synthesis of nitrogen-doped carbon electrocatalyst with good electrochemical stability and fuel tolerance for oxygen reduction reaction (ORR) by pyrolysis of protein-rich pulse flour cooked with SiO2 nanoparticles.
    Type: Application
    Filed: September 2, 2014
    Publication date: July 7, 2016
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Rohan GOKHALE, Sreekuttan Maraveedu UNNI, Kurungot SREEKUMAR, Satishchandra Balkrishna OGALE
  • PROCESS FOR THE PREPARATION OF MEMBRANE ELECTRODE ASSEMBLIES (MEAs)
    Publication number: 20140017595
    Abstract: PBI-based MEAs for high temperature Polymer Electrolyte Membrane Fuel Cell (PEMFC) were prepared by direct hot pressing of catalyst layer on Teflon sheets on to both sides of phosphoric acid doped PBI membrane (decal transfer). These MEAs show two times higher performance compared to the MEAs prepared by normal brush coating method on GDL at an operating temperature of 160° C.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: Council of Scientific & Industrial Research
    Inventors: Vijayamohanan Kunju Krishna Pillai, Ulhas Kanhaiyalal Kharul, Sreekumar Kurungot, Harshal Dilip Chaudhari, Sreekuttan Maraveedu Unni, Bipinlal Unni, Husain Noman Kagalwala