Patents by Inventor Rashelle S. McDonald

Rashelle S. McDonald 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).

  • Methods for using rose bengal for detection of chemical warfare agents
    Patent number: 10564074
    Abstract: Rose Bengal for detecting a presence of chemical warfare agents. A method of detecting presence of a chemical warfare agent and includes applying a quinoid form of Rose Bengal to a substrate. When the substrate is exposed to the chemical warfare agent, a lactone form of Rose Bengal is spectrally observed because presence of the chemical warfare agent converts the quinoid form to the lactone form of Rose Bengal.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 18, 2020
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Jeffery Ray Owens, Rashelle S. McDonald, Dmytro Volkov
  • Methods for using rose bengal for detection of oxidative decomposition of contaminants
    Patent number: 9470610
    Abstract: Rose Bengal for detecting a presence of and decomposing contaminants. A method of detecting the presence of a contaminant includes treating a substrate with Rose Bengal and exposing the substrate to a light having a wavelength within the visible spectrum. A response of the Rose Bengal is monitored during the light exposure. When a contaminant is present and is exposed to the light, a conversion of the Rose Bengal between a quinoid form and a lactone form is induced.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 18, 2016
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Jeffery Ray Owens, Rashelle S. McDonald, Dmytro Volkov