Patents by Inventor Joannis Kallitsis

Joannis Kallitsis 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).

  • Patent number: 8247521
    Abstract: New multifunctional aromatic copolymers bearing pyridine or pyrimidine units either in the main chain or side chain and single wall carbon nanotubes or multi wall carbon nanotubes as side chain pendants have been prepared. These multifunctional materials will combine both high proton and electrical conductivity due to the existence of polar pyridine or pyrimidine groups and carbon nanotubes within the same chemical structure. The prepared multifunctional materials can be used in the catalyst ink of the electrodes in high temperature PEM fuel cells.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: August 21, 2012
    Assignee: Advent Technologies
    Inventors: Christos Chochos, Nora Gourdoupi, Nikolas Triantafyllopoulos, Joannis Kallitsis
  • Publication number: 20110082261
    Abstract: Facile ways towards the integration of the regioregular poly(3-alkylthiophene)s onto carbon nanotubes, providing multifunctional materials that combine the extraordinary properties of the carbon nanotubes with those of regioregular poly(3-alkylthiophene)s, are presented.
    Type: Application
    Filed: November 12, 2010
    Publication date: April 7, 2011
    Applicant: ADVENT TECHNOLOGIES, S.A.
    Inventors: Christos Chochos, Joannis Kallitsis
  • Patent number: 7854862
    Abstract: Facile ways towards the integration of the regioregular poly(3-alkylthiophene)s onto carbon nanotubes, providing multifunctional materials that combine the extraordinary properties of the carbon nanotubes with those of regioregular poly(3-alkylthiophene)s, are presented.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: December 21, 2010
    Assignee: Advent Technologies
    Inventors: Christos Chochos, Joannis Kallitsis
  • Patent number: 7842734
    Abstract: The subject invention relates to the development and characterization of a new series of poly (arylene ether) copolymers containing pyridine and biphenyl or hydroquinone moieties. Preferred polymers can exhibit very good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. The invention further relates to the preparation and application of MEA on PEMFC type single cells.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Advent Technologies SA
    Inventors: Maria Geormezi, Valadoula Deimede, Nora Gourdoupi, Joannis Kallitsis
  • Patent number: 7842733
    Abstract: High temperature polymer electrolyte membranes bearing pyridine and tetramethyl biphenyl moieties are provided. Preferred polymers can exhibit good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. Further provided are MEA on PEMFC type single cells.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Advent Technologies SA
    Inventors: Nora Gourdoupi, Nikolaos Triantafyllopoulos, Valadoula Deimede, Lefteris Pefkianakis, Maria Daletou, Stylianos Neophytides, Joannis Kallitsis
  • Publication number: 20100062293
    Abstract: This invention refers to an Internal Reforming Alcohol Fuel Cell (IRAFC) using polymer electrolyte membranes (PEMs), which are functional at 190-220° C. and alcohol fuel reforming catalysts for the production of CO-free hydrogen in the temperature range of high temperature PEM fuel cell. The fuel cell comprises: an anode; a high-temperature ion-conducting electrolyte membrane, and any other polymer electrolyte that can operate at temperatures between about 180° C. to about 230° C.; a cathode and two current collectors on each side of the cell.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 11, 2010
    Applicant: ADVENT TECHNOLOGIES
    Inventors: Nikolaos Triantafyllopoulos, Maria Geormezi, Ioanna Papavasiliou, Maria Daletou, Joannis Kallitsis, Stylianos Neophytides, Theophilos Ioannides, George Avgouropoulos
  • Publication number: 20090085012
    Abstract: Facile ways towards the integration of the regioregular poly(3-alkylthiophene)s onto carbon nanotubes, providing multifunctional materials that combine the extraordinary properties of the carbon nanotubes with those of regioregular poly(3-alkylthiophene)s, are presented.
    Type: Application
    Filed: August 13, 2008
    Publication date: April 2, 2009
    Inventors: Christos CHOCHOS, Joannis KALLITSIS
  • Publication number: 20090081487
    Abstract: New multifunctional aromatic copolymers bearing pyridine or pyrimidine units either in the main chain or side chain and single wall carbon nanotubes or multi wall carbon nanotubes as side chain pendants have been prepared. These multifunctional materials will combine both high proton and electrical conductivity due to the existence of polar pyridine or pyrimidine groups and carbon nanotubes within the same chemical structure. The prepared multifunctional materials can be used in the catalyst ink of the electrodes in high temperature PEM fuel cells.
    Type: Application
    Filed: June 25, 2008
    Publication date: March 26, 2009
    Inventors: Christos Chochos, Nora Gourdoupi, Nikolas Triantafyllopoulos, Joannis Kallitsis
  • Publication number: 20080160378
    Abstract: The subject invention relates to the development and characterization of a new series of poly (arylene ether) copolymers containing pyridine and biphenyl or hydroquinone moieties. Preferred polymers can exhibit very good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. The invention further relates to the preparation and application of MEA on PEMFC type single cells.
    Type: Application
    Filed: May 24, 2007
    Publication date: July 3, 2008
    Applicant: Advent Technologies SA
    Inventors: Maria Geormezi, Valadoula Deimede, Nora Gourdoupi, Joannis Kallitsis
  • Publication number: 20080063914
    Abstract: Featured are polymer electrolyte membranes based on blends of aromatic polyethers containing pyridine units in the main chain. Preferred membranes can show excellent mechanical properties and exceptional thermal and oxidative stability. Preferred polymer blends can be easily doped with inorganic acids such as phosphoric acid resulting in ionically conducting membrane.
    Type: Application
    Filed: May 23, 2007
    Publication date: March 13, 2008
    Inventors: Nora Gourdoupi, Maria Daletou, Stylianos Neophytides, Joannis Kallitsis
  • Publication number: 20080063923
    Abstract: High temperature polymer electrolyte membranes bearing pyridine and tetramethyl biphenyl moieties are provided. Preferred polymers can exhibit good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. Further provided are MEA on PEMFC type single cells.
    Type: Application
    Filed: May 24, 2007
    Publication date: March 13, 2008
    Applicant: Advent Technologies SA
    Inventors: Nora Gourdoupi, Nikolaos Triantafyllopoulos, Valadoula Deimede, Lefteris Pefkianakis, Maria Daletou, Stylianos Neophytides, Joannis Kallitsis