Patents by Inventor John ALPER

John ALPER 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).

  • Device for synthesising core/shell type nanoparticles by laser pyrolysis and associated method
    Patent number: 11618001
    Abstract: A device for synthesising core-shell nanoparticles by laser pyrolysis is provided. The device includes a reactor having a first chamber for the synthesis of the core, provided with an inlet for a core precursor, a second chamber for the synthesis of the shell, provided with an inlet for a shell precursor, and at least one communication channel between the two chambers to transmit the cores of the nanoparticles intended to be formed from the first chamber towards the second chamber. The device also includes an optical device to illuminate each of the two chambers, the device comprising at least one laser capable of emitting a laser beam intended to interact with the precursors to form the core and the shell.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 4, 2023
    Assignee: Commissariat A L'Energie Atomique Et Aux Energies Alternatives
    Inventors: Nathalie Herlin, Florent Boismain, John Alper
  • METHOD FOR SYNTHESISING CORE-SHELL SILICON-GERMANIUM NANOPARTICLES BY LASER PYROLYSIS, METHOD FOR PRODUCING AN ELECTRODE FOR A LITHIUM BATTERY AND ASSOCIATED ELECTRODE
    Publication number: 20210265624
    Abstract: Provided is method for synthesising core-shell nanoparticles by laser pyrolysis. The method may include a) conveying together a gaseous mixture including a silicon precursor and a germanium precursor in a reaction zone of a first chamber of a reactor, and b) emitting a first laser beam at the level of the reaction zone for carrying out a laser pyrolysis of the mixture, the steps making it possible to obtain nanoparticles having a core made of a silicon- and germanium-based alloy and a silicon shell.
    Type: Application
    Filed: June 24, 2019
    Publication date: August 26, 2021
    Inventors: Nathalie HERLIN-BOIME, Antoine DESRUES, Florent BOISMAIN, Cédric HAON, John ALPER
  • DEVICE FOR SYNTHESISING CORE/SHELL TYPE NANOPARTICLES BY LASER PYROLYSIS AND ASSOCIATED METHOD
    Publication number: 20190388865
    Abstract: A device for synthesising core-shell nanoparticles by laser pyrolysis is provided. The device includes a reactor having a first chamber for the synthesis of the core, provided with an inlet for a core precursor, a second chamber for the synthesis of the shell, provided with an inlet for a shell precursor, and at least one communication channel between the two chambers to transmit the cores of the nanoparticles intended to be formed from the first chamber towards the second chamber. The device also includes an optical device to illuminate each of the two chambers, the device comprising at least one laser capable of emitting a laser beam intended to interact with the precursors to form the core and the shell.
    Type: Application
    Filed: November 30, 2017
    Publication date: December 26, 2019
    Inventors: Nathalie HERLIN, Florent BOISMAIN, John ALPER