Patents by Inventor Frank Appleton

Frank Appleton 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: 4016404
    Abstract: A credit card having information stored thereon in the form of a matrix of apertures formed through the credit card in a predetermined order, and a verifier adapted to read the information matrix from the credit card and by comparison of the information encoded on the credit card with a comparison code manually entered by a user through a keyboard, determine whether the credit card use is authorized. The verifier generally comprises a processing unit operatively coupled to a random access memory into which the encoded information on the credit card is stored. The processing unit is pre-programmed with the matrix bit positions and the sequence of a scrambler code and the numerical value of the scrambler code is then determined. The processing unit is further pre-programmed to determine the matrix bit positions and the sequence of a user code from the information matrix as a function of the numerical value of the scrambler code so that the numerical value of the user code can be determined.
    Type: Grant
    Filed: August 5, 1975
    Date of Patent: April 5, 1977
    Inventor: Frank Appleton