Patents by Inventor Rick L. Demmer

Rick L. Demmer 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: 11898960
    Abstract: A method for rapid detection of actinides including the steps of having a support including a colorimetric complexation, placing the support in communication with a sample through urinalysis, and receiving a visual indicator from the colorimetric complexation. The sample having an unknown concentration of at least one actinide within it. The colorimetric complexation is configured to activate when contacted by a threshold concentration of an actinide.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: February 13, 2024
    Assignee: U.S. Department of Energy
    Inventors: Catherine Riddle, Rick L. Demmer
  • Publication number: 20210396680
    Abstract: A method for rapid detection of actinides including the steps of having a support including a colorimetric complexation, placing the support in communication with a sample through urinalysis, and receiving a visual indicator from the colorimetric complexation. The sample having an unknown concentration of at least one actinide within it. The colorimetric complexation is configured to activate when contacted by a threshold concentration of an actinide.
    Type: Application
    Filed: September 2, 2021
    Publication date: December 23, 2021
    Inventors: Catherine Riddle, Rick L. Demmer
  • Publication number: 20200400583
    Abstract: A method for rapid detection of actinides including the steps of having a support including a colorimetric complexation, placing the support in communication with a sample, and receiving a visual indicator from the colorimetric complexation. The sample having an unknown concentration of at least one actinide within it. The colorimetric complexation is configured to activate when contacted by a threshold concentration of an actinide.
    Type: Application
    Filed: June 8, 2020
    Publication date: December 24, 2020
    Inventors: Catherine Riddle, Rick L. Demmer
  • Patent number: 10703968
    Abstract: Scintillation compositions comprising a gadolinium compound and a scintillation compound in a polymer matrix precursor. The scintillation compound comprises strontium diiodide, fac-tris(2-phenylpyridine)iridium (Ir(ppy)3), a quinine compound, or combinations thereof, or 2-(4-biphenylyl)-5 phenyl-1,3,4-oxadiazole (PBD), 2-(4-tert-butylphenyl)-5-(4-phenylphenyl)-1,3,4-oxadiazole (b-PBD), 2,5-diphenyl oxazole (PPO), 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), or combinations thereof. Hydrogels comprising the gadolinium compound and scintillation compound in a polymer matrix are also disclosed, as are related systems and methods.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 7, 2020
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Catherine Lynn Riddle, Douglas W. Akers, Dawn M. Scates, Rick L. Demmer
  • Publication number: 20180223183
    Abstract: Scintillation compositions comprising a gadolinium coordination compound and a scintillation compound in a polymer matrix material. The scintillation compound comprises strontium diiodide, fac-tris(2-phenylpyridine)iridium (Ir(ppy)3), a quinine compound, or combinations thereof, or 2-(4-biphenylyl)-5 phenyl-1,3,4-oxadiazole (PBD), 2-(4-tert-butylphenyl)-5-(4-phenylphenyl)-1,3,4-oxadiazole (b-PBD), 2,5-diphenyl oxazole (PPO), 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), or combinations thereof. Hydrogels comprising the gadolinium coordination compound and scintillation compound in a polymer matrix are also disclosed, as are related systems and methods.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 9, 2018
    Inventors: Catherine Lynn Riddle, Douglas W. Akers, Dawn M. Scates, Rick L. Demmer
  • Patent number: 9126230
    Abstract: A method and an apparatus using aqueous fixatives for fogging of ventilation ductwork, enclosures, or buildings containing dust, lint, and particulates that may be contaminated by radionuclides and other dangerous or unsafe particulate contaminants, which method and apparatus are capable of (1) obtaining full coverage within the ductwork and (2) penetrating and fixing the lint, dust and large particles present in the ductwork so that no airborne particles are released during or after the application of the fixative. New aqueous fogging solutions outperform conventional glycerin-based solutions. These aqueous solutions will fog using conventional methods of application and contain a surfactant to aid wetting and penetration of the lint and dust, a binder to stabilize loose or respirable particles, and an agent to aid in fogging and enhance adhesiveness. The solutions are safe and easy to use.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: September 8, 2015
    Assignee: Vista Engineering Technologies, Inc.
    Inventors: Joseph W. Maresca, Jr., Lori M. Kostelnik, James R. Kriskivich, Rick L. Demmer, Julia L. Tripp