Patents by Inventor Eric Stephen Duma

Eric Stephen Duma 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: 12575935
    Abstract: A method for 3D printing a prosthetic socket from a digital model, including printing a solid wall perimeter of the prosthetic socket with a width achieved in a single pass of a printing nozzle, and forming a plurality of stiffener elements proximate a bottom end of the prosthetic socket, as a function of the printing the solid wall perimeter, is provided. Also provided is a 3D printed prosthetic socket including an upper portion, a lower portion configured to be attached to a prosthetic pylon, and a plurality of stiffener elements radially extending from the lower portion, wherein the upper portion, the lower portion, and the plurality of stiffener elements are printed as a solid wall construction comprised of a printing material deposited using only a single pass of a printing nozzle.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: March 17, 2026
    Assignee: PRECISION VALVE & AUTOMATION, INC.
    Inventors: Eric Stephen Duma, Jason Curtis Schoen, Karin Cecilia Backlin Schaffer
  • Publication number: 20250288423
    Abstract: A method for 3D printing a prosthetic socket from a digital model, including printing a solid wall perimeter of the prosthetic socket with a width achieved in a single pass of a printing nozzle, and forming a plurality of stiffener elements proximate a bottom end of the prosthetic socket, as a function of the printing the solid wall perimeter, is provided. Also provided is a 3D printed prosthetic socket including an upper portion, a lower portion configured to be attached to a prosthetic pylon, and a plurality of stiffener elements radially extending from the lower portion, wherein the upper portion, the lower portion, and the plurality of stiffener elements are printed as a solid wall construction comprised of a printing material deposited using only a single pass of a printing nozzle.
    Type: Application
    Filed: June 2, 2025
    Publication date: September 18, 2025
    Inventors: Eric Stephen Duma, Jason Curtis Schoen, Karin Cecilia Backlin Schaffer
  • Publication number: 20220370202
    Abstract: A method for 3D printing a prosthetic socket from a digital model, including printing a solid wall perimeter of the prosthetic socket with a width achieved in a single pass of a printing nozzle, and forming a plurality of stiffener elements proximate a bottom end of the prosthetic socket, as a function of the printing the solid wall perimeter, is provided. Also provided is a 3D printed prosthetic socket including an upper portion, a lower portion configured to be attached to a prosthetic pylon, and a plurality of stiffener elements radially extending from the lower portion, wherein the upper portion, the lower portion, and the plurality of stiffener elements are printed as a solid wall construction comprised of a printing material deposited using only a single pass of a printing nozzle.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 24, 2022
    Inventors: Eric Stephen Duma, Jason Curtis Schoen, Karin Cecilia Backlin Schaffer
  • Patent number: D1136194
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: July 21, 2026
    Assignee: Precision Valve & Automation, Inc.
    Inventors: Eric Stephen Duma, Jason Curtis Schoen, Karin Cecilia Backlin Schaffer
  • Patent number: D1137671
    Type: Grant
    Filed: September 19, 2025
    Date of Patent: July 28, 2026
    Assignee: Precision Valve & Automation, Inc.
    Inventors: Eric Stephen Duma, Jason Curtis Schoen, Karin Cecilia Backlin Schaffer