Patents by Inventor Eric W. Kahrs

Eric W. Kahrs 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).

  • Printed LEDs and wavelength conversion area on objects to provide optical security feature
    Patent number: 10482364
    Abstract: In one embodiment, an authentication area on a portable object comprises a random arrangement of printed LEDs and a wavelength conversion layer. The object to be authenticated may be a credit card, casino chip, or other object. When the LEDs are energized during authentication of the object, the emitted spectrum and/or persistence of the wavelength conversion layer is detected and encoded in a first code, then compared to valid codes stored in the database. If there is a match, the object is authenticated. The LED power may be remotely inductively coupled and may flash the LEDs, while the wavelength conversion layer emission slowly decays during its optical detection. The flash of blue LED light may be emitted from the edges of the object, which may act as a light guide, for optical feedback to the user that the object is being authenticated.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: November 19, 2019
    Assignee: Nthdegree Technologies Worldwide Inc.
    Inventors: Steven B. Roach, Richard A. Blanchard, Eric W. Kahrs, Larry Todd Biggs, Chye Kiat Ang, Mark D. Lowenthal, William J. Ray
  • PRINTED LEDS AND WAVELENGTH CONVERSION AREA ON OBJECTS TO PROVIDE OPTICAL SECURITY FEATURE
    Publication number: 20190272456
    Abstract: In one embodiment, an authentication area on a portable object comprises a random arrangement of printed LEDs and a wavelength conversion layer. The object to be authenticated may be a credit card, casino chip, or other object. When the LEDs are energized during authentication of the object, the emitted spectrum and/or persistence of the wavelength conversion layer is detected and encoded in a first code, then compared to valid codes stored in the database. If there is a match, the object is authenticated. The LED power may be remotely inductively coupled and may flash the LEDs, while the wavelength conversion layer emission slowly decays during its optical detection. The flash of blue LED light may be emitted from the edges of the object, which may act as a light guide, for optical feedback to the user that the object is being authenticated.
    Type: Application
    Filed: May 14, 2019
    Publication date: September 5, 2019
    Inventors: Steven B. Roach, Richard A. Blanchard, Eric W. Kahrs, Larry Todd Biggs, Chye Kiat Ang, Mark D. Lowenthal, William J. Ray