Patents by Inventor David Alan WALKER

David Alan WALKER 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).

  • Methodologies to rapidly cure and coat parts produced by additive manufacturing
    Patent number: 11897195
    Abstract: A process to cure and/or modify the surface of a three dimensional (3D) printed part comprising the steps of immersing a three dimensional (3D) printed part, containing reactive moieties, into a liquid bath at an elevated temperature to effect polymerization of the reactive moieties of the 3D printed part to provide a cured 3D printed part is described. The liquid bath can further contain reactive molecules that can react with the surface of the 3D printed part to provide a coating which alters the surface characteristics of the 3D printed part.
    Type: Grant
    Filed: November 17, 2022
    Date of Patent: February 13, 2024
    Assignee: AZUL 3D, INC.
    Inventor: David Alan Walker
  • Electrochemical polymer pen lithography
    Patent number: 11747723
    Abstract: Disclosed herein is a massively parallel patterning tool for the deposition of single metals or metal alloys with size and composition control. Methods of the disclosure use a hydrogel array of pyramidal pen tips as a medium for localized electrodeposition, in conjunction with a scanning probe lithography platform and a three-electrode cell. This versatile technique can be used for high-throughput 3D printing, biomolecule patterning, or screening of catalyst nanoparticles or thin films.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 5, 2023
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Chad A. Mirkin, Rustin Golnabi, Eun Bi Oh, David Alan Walker
  • METHODOLOGIES TO RAPIDLY CURE AND COAT PARTS PRODUCED BY ADDITIVE MANUFACTURING
    Publication number: 20230078119
    Abstract: A process to cure and/or modify the surface of a three dimensional (3D) printed part comprising the steps of immersing a three dimensional (3D) printed part, containing reactive moieties, into a liquid bath at an elevated temperature to effect polymerization of the reactive moieties of the 3D printed part to provide a cured 3D printed part is described. The liquid bath can further contain reactive molecules that can react with the surface of the 3D printed part to provide a coating which alters the surface characteristics of the 3D printed part.
    Type: Application
    Filed: November 17, 2022
    Publication date: March 16, 2023
    Inventor: David Alan WALKER
  • Methodologies to rapidly cure and coat parts produced by additive manufacturing
    Patent number: 11534966
    Abstract: A process to cure and/or modify the surface of a three dimensional (3D) printed part comprising the steps of immersing a three dimensional (3D) printed part, containing reactive moieties, into a liquid bath at an elevated temperature to effect polymerization of the reactive moieties of the 3D printed part to provide a cured 3D printed part is described. The liquid bath can further contain reactive molecules that can react with the surface of the 3D printed part to provide a coating which alters the surface characteristics of the 3D printed part.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: December 27, 2022
    Assignee: AZUL 3D, INC.
    Inventor: David Alan Walker
  • METHODOLOGIES TO RAPIDLY CURE AND COAT PARTS PRODUCED BY ADDITIVE MANUFACTURING
    Publication number: 20200324470
    Abstract: A process to cure and/or modify the surface of a three dimensional (3D) printed part comprising the steps of immersing a three dimensional (3D) printed part, containing reactive moieties, into a liquid bath at an elevated temperature to effect polymerization of the reactive moieties of the 3D printed part to provide a cured 3D printed part is described. The liquid bath can further contain reactive molecules that can react with the surface of the 3D printed part to provide a coating which alters the surface characteristics of the 3D printed part.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 15, 2020
    Inventor: David Alan WALKER