Patents by Inventor Elena Atrazheva

Elena Atrazheva 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).

  • Radiation indicator device
    Patent number: 6504161
    Abstract: A radiation indicator device for use in indicating exposure to ultraviolet-B radiation. The device includes a radiation sensitive mixture which is selectively responsive to ultraviolet radiation having a wavelength substantially within or shorter than the range of wavelengths of ultraviolet-B radiation. The radiation sensitive mixture includes an organic halogen constituent capable of producing at least one acidic product upon exposure to ultraviolet radiation and an indicator constituent capable of producing a change in color in response to a change in concentration of the acidic product. The radiation sensitive mixture has a first color representing a relatively low concentration of the acidic product and has a second color representing a relatively high concentration of the acidic product. The first color is visually distinguishable from the second color.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: January 7, 2003
    Assignees: Sunspots, Inc., Edge Medical, Inc.
    Inventors: Stuart A. Jackson, John R. Mercer, Elena Atrazheva, Karima Hudda, Sanyi Wang