Patents by Inventor Bruno Azeredo

Bruno Azeredo 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).

  • Synthesis of nanoscale metal feedstock for additive manufacturing
    Patent number: 11980936
    Abstract: A method of making a metal-polymer composite includes dealloying metallic powder to yield porous metal particles, monitoring a temperature of the mixture, controlling the rate of combining, a maximum temperature of the mixture, or both, and combining the porous metal particles with a polymer to yield a composite. Dealloying includes combining the metallic powder with an etchant to yield a mixture. A metal-polymer composite includes porous metal particles having an average particle size of about 0.2 ?m to about 500 ?m and a thermoplastic or thermoset polymer. The polymer composite comprises at least 10 vol % of the porous metal particles. A powder mixture includes porous metal particles having an average particle size of about 0.2 ?m to about 500 ?m and a metal powder. The powder mixture includes about 1 wt % to about 99 wt % of the porous metal particles.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: May 14, 2024
    Assignees: Arizona Board of Regents on behalf of Arizona State University, Purdue Research Foundation
    Inventors: Stanislau Niauzorau, Aliaksandr Sharstniou, Amm G. Hasib, Bruno Azeredo, Natalya Kublik, Kenan Song, Nikhilesh Chawla, Sridhar Niverty
  • Electrochemical imprinting of micro- and nano-structures in porous silicon, silicon, and other semiconductors
    Patent number: 11579524
    Abstract: An imprinting platform including a noble metal catalyst, a semiconductor substrate, and a pre-patterned polymer stamp, where the catalyst is attached to the stamp, and related methods and articles.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: February 14, 2023
    Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Keng Hsu, Placid Ferreira, Bruno Azeredo
  • Metal-coated porous polymeric stamp materials for electrochemical imprinting
    Patent number: 11549193
    Abstract: A metal-assisted chemical imprinting stamp includes a porous polymer substrate and a noble metal coating formed directly on the porous polymer substrate. Fabricating the metal-assisted chemical imprinting stamp includes providing a porous polymer substrate, and disposing a noble metal on the porous polymer substrate. Metal-assisted chemical imprinting includes positioning a silicon substrate in an etching solution, contacting a surface of the silicon substrate with a stamp comprising a noble metal layer on a surface of a porous polymer substrate, and separating the silicon substrate from the stamp to yield a pattern corresponding to the noble metal layer on the silicon substrate.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: January 10, 2023
    Assignees: Arizona Board of Regents on behalf of Arizona State University, The Regents of The University of Colorado, a Body Corporate
    Inventors: Jasmina Markovski, Aliaksandr Sharstniou, Stanislau Niauzorau, Bruno Azeredo, Yifu Ding
  • SYNTHESIS OF NANOSCALE METAL FEEDSTOCK FOR ADDITIVE MANUFACTURING
    Publication number: 20220402024
    Abstract: A method of making a metal-polymer composite includes dealloying metallic powder to yield porous metal particles, monitoring a temperature of the mixture, controlling the rate of combining, a maximum temperature of the mixture, or both, and combining the porous metal particles with a polymer to yield a composite. Dealloying includes combining the metallic powder with an etchant to yield a mixture. A metal-polymer composite includes porous metal particles having an average particle size of about 0.2 ?m to about 500 ?m and a thermoplastic or thermoset polymer. The polymer composite comprises at least 10 vol % of the porous metal particles. A powder mixture includes porous metal particles having an average particle size of about 0.2 ?m to about 500 ?m and a metal powder. The powder mixture includes about 1 wt % to about 99 wt % of the porous metal particles.
    Type: Application
    Filed: June 15, 2022
    Publication date: December 22, 2022
    Inventors: Stanislau Niauzorau, Aliaksandr Sharstniou, Amm G. Hasib, Bruno Azeredo, Natalya Kublik, Kenan Song, Nikhilesh Chawla, Sridhar Niverty
  • ELECTROCHEMICAL IMPRINTING OF MICRO- AND NANO-STRUCTURES IN POROUS SILICON, SILICON, AND OTHER SEMICONDUCTORS
    Publication number: 20220128902
    Abstract: An imprinting platform including a noble metal catalyst, a semiconductor substrate, and a pre-patterned polymer stamp, where the catalyst is attached to the stamp, and related methods and articles.
    Type: Application
    Filed: November 3, 2021
    Publication date: April 28, 2022
    Inventors: Keng HSU, Placid Ferreira, Bruno Azeredo
  • METAL-COATED POROUS POLYMERIC STAMP MATERIALS FOR ELECTROCHEMICAL IMPRINTING
    Publication number: 20210246569
    Abstract: A metal-assisted chemical imprinting stamp includes a porous polymer substrate and a noble metal coating formed directly on the porous polymer substrate. Fabricating the metal-assisted chemical imprinting stamp includes providing a porous polymer substrate, and disposing a noble metal on the porous polymer substrate. Metal-assisted chemical imprinting includes positioning a silicon substrate in an etching solution, contacting a surface of the silicon substrate with a stamp comprising a noble metal layer on a surface of a porous polymer substrate, and separating the silicon substrate from the stamp to yield a pattern corresponding to the noble metal layer on the silicon substrate.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 12, 2021
    Inventors: Jasmina Markovski, Aliaksandr Sharstniou, Stanislau Niauzorau, Bruno Azeredo, Yifu Ding
  • ELECTROCHEMICAL IMPRINTING OF MICRO- AND NANO-STRUCTURES IN POROUS SILICON, SILICON, AND OTHER SEMICONDUCTORS
    Publication number: 20190384167
    Abstract: An imprinting platform including a noble metal catalyst, a semiconductor substrate, and a pre-patterned polymer stamp, where the catalyst is attached to the stamp, and related methods and articles.
    Type: Application
    Filed: January 26, 2018
    Publication date: December 19, 2019
    Inventors: Keng HSU, Placid Ferreira, Bruno Azeredo