Patents by Inventor Duane C. Blake

Duane C. Blake 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).

  • AURA devices and methods for increasing rare coin value
    Patent number: 8661889
    Abstract: The present invention relates to coin value safeguard devices and methods by determining and monitoring the eye appeal of a coin and labeling that eye appeal on an appropriate holder of the coin such that the eye appeal is displayed to a viewer of the holder, and that coin's value is thus increased. Appropriately knowledgeable graders assess a coin's eye appeal by determining the coin's axial ultimate refractory angle(s) (AURA) and assigning an AURA rating to the coin. The coin image is stored in a database where it may be compared to secondary temporal images of the coin as necessary to determine whether coin doctoring has been employed.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: March 4, 2014
    Inventor: Duane C. Blake
  • AURA devices and methods for increasing rare coin value
    Publication number: 20110126618
    Abstract: The present invention relates to coin value safeguard devices and methods by determining and monitoring the eye appeal of a coin and labeling that eye appeal on an appropriate holder of the coin such that the eye appeal is displayed to a viewer of the holder, and that coin's value is thus increased. Appropriately knowledgeable graders assess a coin's eye appeal by determining the coin's axial ultimate refractory angle(s) (AURA) and assigning an AURA rating to the coin. The coin image is stored in a database where it may be compared to secondary temporal images of the coin as necessary to determine whether coin doctoring has been employed.
    Type: Application
    Filed: July 14, 2010
    Publication date: June 2, 2011
    Inventor: Duane C. Blake