Patents by Inventor John David Robertson

John David Robertson 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).

  • Publication number: 20230070476
    Abstract: The present invention is directed to processes for ionizing one or more lanthanide isotopes, processes for separating lanthanide isotopes, various apparatus and systems useful for these processes, and compositions prepared from these processes.
    Type: Application
    Filed: January 31, 2022
    Publication date: March 9, 2023
    Applicant: The Curators of the University of Missouri
    Inventors: John Gahl, John David Robertson, Peter Norgard, Brad Jeffries, Valentina O'Donnell
  • Patent number: 10083770
    Abstract: A solid-state high energy-density micro radioisotope power source device including a dielectric and radiation shielding body having an internal cavity, a first electrode disposed a first end of the cavity, and a second electrode disposed at an opposing second end of the cavity and spaced apart from the first electrode such that a micro chamber is provided therebetween.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: September 25, 2018
    Assignee: The Curators of the University of Missouri
    Inventors: Jae Wan Kwon, Tongtawee Wacharasindhu, John David Robertson
  • Patent number: 9242016
    Abstract: The present invention is directed ?-particle emitting nanoparticles that comprise a lanthanide phosphate sequestration shell enclosing an ?-emitting-radioisotope-doped lanthanide phosphate core such that the shell allows at least some of the ? emissions from the ?-emitting radioisotope to pass therethrough and prevents at least some radioactive decay products of the ?-emitting radioisotope from exiting the ?-particle emitting nanoparticle. Further, such ?-particle emitting nanoparticles may be coated with gold and functionalized. Additionally, a method for making and using the same are disclosed.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: January 26, 2016
    Assignee: The Curators of the University of Missouri
    Inventors: John David Robertson, Mark F. McLaughlin, Paul H. Pevsner
  • Publication number: 20140159541
    Abstract: A solid-state high energy-density micro radioisotope power source device including a dielectric and radiation shielding body having an internal cavity, a first electrode disposed a first end of the cavity, and a second electrode disposed at an opposing second end of the cavity and spaced apart from the first electrode such that a micro chamber is provided therebetween.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 12, 2014
    Applicant: The Curators of the University of Missouri
    Inventors: Jae Wan Kwon, Tongtawee Wacharasindhu, John David Robertson
  • Patent number: 8691404
    Abstract: A method of constructing a solid-state energy-density micro radioisotope power source device. In such embodiments, the method comprises depositing the pre-voltaic semiconductor composition, comprising a semiconductor material and a radioisotope material, into a micro chamber formed within a power source device body. The method additionally includes heating the body to a temperature at which the pre-voltaic semiconductor composition will liquefy within the micro chamber to provide a liquid state composite mixture. Furthermore, the method includes cooling the body and liquid state composite mixture such that liquid state composite mixture solidifies to provide a solid-state composite voltaic semiconductor, thereby providing a solid-state high energy-density micro radioisotope power source device.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: April 8, 2014
    Assignee: The Curators of the University of Missouri
    Inventors: Jae Wan Kwon, Tongtawee Wacharasindhu, John David Robertson
  • Publication number: 20130004417
    Abstract: The present invention is directed ?-particle emitting nanoparticles that comprise a lanthanide phosphate sequestration shell enclosing an ?-emitting-radioisotope-doped lanthanide phosphate core such that the shell allows at least some of the ? emissions from the ?-emitting radioisotope to pass therethrough and prevents at least some radioactive decay products of the ?-emitting radioisotope from exiting the ?-particle emitting nanoparticle. Further, such ?-particle emitting nanoparticles may be coated with gold and functionalized. Additionally, a method for making and using the same are disclosed.
    Type: Application
    Filed: January 3, 2012
    Publication date: January 3, 2013
    Applicant: THE CURATORS OF THE UNIVERSITY OF MISSOURI
    Inventors: John David Robertson, Mark F. McLaughlin, Paul H. Pevsner
  • Publication number: 20100233518
    Abstract: A method of constructing a solid-state energy-density micro radioisotope power source device. In such embodiments, the method comprises depositing the pre-voltaic semiconductor composition, comprising a semiconductor material and a radioisotope material, into a micro chamber formed within a power source device body. The method additionally includes heating the body to a temperature at which the pre-voltaic semiconductor composition will liquefy within the micro chamber to provide a liquid state composite mixture. Furthermore, the method includes cooling the body and liquid state composite mixture such that liquid state composite mixture solidifies to provide a solid-state composite voltaic semiconductor, thereby providing a solid-state high energy-density micro radioisotope power source device.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Applicant: CURATORS OF THE UNIVERSITY OF MISSOURI
    Inventors: Jae Wan Kwon, Tongtawee Wacharasindhu, John David Robertson