Patents by Inventor Donald David

Donald David 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: 11309478
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: April 19, 2022
    Assignees: The Regents of the University of Colorado, a body corporate, The Government of the United States of America, as represented by the Secretary of Commerce National Institite of Standards and Technology
    Inventors: Donald David, David Pappas, Xian Wu
  • Publication number: 20210226113
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Inventors: Donald David, David Pappas, Xian Wu
  • Patent number: 11018290
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: May 25, 2021
    Assignees: The Regents of the University of Colorado, a body corporate, The Government of the United States of America, as represented by the Secretary of Commerce National Institute of Standards and Technology
    Inventors: Donald David, David Pappas, Xian Wu
  • Publication number: 20200335683
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Application
    Filed: July 2, 2020
    Publication date: October 22, 2020
    Inventors: Donald David, David Pappas, Xian Wu
  • Patent number: 10741742
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 11, 2020
    Assignees: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE, GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    Inventors: Donald David, David Pappas, Xian Wu
  • Publication number: 20190267532
    Abstract: This disclosure describes systems, methods, and apparatus for multilayer superconducting structures comprising electroplated Rhenium, where the Rhenium operates in a superconducting regime at or above 4.2 K, or above 1.8 K where specific temperatures and times of annealing have occurred. The structure can include at least a first conductive layer applied to a substrate, where the Rhenium layer is electroplated to the first layer. A third layer formed from the same or a different conductor as the first layer can be formed atop the Rhenium layer.
    Type: Application
    Filed: February 28, 2019
    Publication date: August 29, 2019
    Inventors: Donald David, David Pappas, Xian Wu
  • Patent number: 10166246
    Abstract: Provided herein are complexes of metformin or metformin analogues and a TGR5 ligand that are useful in treating diseases including diabetes, cardiovascular disease, and cancer.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: January 1, 2019
    Assignee: City of Hope
    Inventors: Donna Yu, James Lester Figarola, Donald David
  • Publication number: 20170196890
    Abstract: Provided herein are complexes of metformin or metformin analogues and a TGR5 ligand that are useful in treating diseases including diabetes, cardiovascular disease, and cancer.
    Type: Application
    Filed: May 26, 2015
    Publication date: July 13, 2017
    Inventors: Donna Yu, James Lester Figarola, Donald David
  • Publication number: 20070209713
    Abstract: An overfill prevention valve for mounting on the filling inlet of a liquid storage tank has an elongated, tubular valve body provided with an inlet at one end and one or more outlets in the sidewall thereof. A pressure-actuated piston is moveable between an open position spaced below an annular valve seat between the inlet and outlets and a closed position engaging the valve seat to close the outlet. An orifice in the top of the piston communicates with an actuating chamber on the opposite side of the piston so that a measure of piloting liquid flows into the chamber and out a pilot hole at the bottom of the valve body during normal filling operations. A buoyant float is slidable along a hollow guide tube attached to the bottom of valve body and communicates with the pilot port for closing a discharge hole in the guide tube when the float rises to an upwardly buoyed position due to the liquid in the tank reaching a predetermined maximum level.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 13, 2007
    Inventors: Donald David, Ronald Borst