Patents by Inventor Soumyadip Choudhury

Soumyadip Choudhury 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).

  • Cathodes for Li-S batteries
    Patent number: 10651471
    Abstract: The present invention concerns a process for the preparation of a porous carbon structure comprising the steps: a) providing a template comprising voids, b) filling of at least part of the voids with a precursor for the formation of the porous carbon structure, c) carbonizing the precursor for the formation of the porous carbon structure and d) removing at least part of the template. In preferred embodiments the precursor for the formation of the porous carbon structure is a formaldehyde-phenol resin, especially a cross-linked resorcinol-formaldehyde resin. The template further preferably comprises a block copolymer and an amphiphilic molecule, wherein the block copolymer comprises polymeric units of at least one lipophilic monomer and polymeric units of at least one hydrophilic monomer. Further preferred is a process wherein the template comprises a bimodal mixture of particles of silicon dioxide.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 12, 2020
    Assignee: Leibniz-Institut für Polymerforschung Dresden e.V.
    Inventors: Soumyadip Choudhury, Leonid Ionov, Manfred Stamm, Mukesh Agrawal, Marta Horecha
  • CATHODES FOR LI-S BATTERIES
    Publication number: 20170365851
    Abstract: The present invention concerns a process for the preparation of a porous carbon structure comprising the steps: a) providing a template comprising voids, b) filling of at least part of the voids with a precursor for the formation of the porous carbon structure, c) carbonizing the precursor for the formation of the porous carbon structure and d) removing at least part of the template. In preferred embodiments the precursor for the formation of the porous carbon structure is a formaldehyde-phenol resin, especially a cross-linked resorcinol-formaldehyde resin. The template further preferably comprises a block copolymer and an amphiphilic molecule, wherein the block copolymer comprises polymeric units of at least one lipophilic monomer and polymeric units of at least one hydrophilic monomer. Further preferred is a process wherein the template comprises a bimodal mixture of particles of silicon dioxide.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 21, 2017
    Inventors: Soumyadip Choudhury, Leonid Ionov, Manfred Stamm, Mukesh Agrawal, Marta Horecha