Patents by Inventor Stewart Brubaker

Stewart Brubaker 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: 5586787
    Abstract: The present invention relates to a method and apparatus for preventing the forgery of paper records. The method includes providing at a manufacturing site paper and a marking agent having a pre-determined and identifiable photoluminescent characteristic; printing fixed indicia on the paper using the marking agent; transferring the paper to a point of sales site; installing the paper in a printing apparatus capable of both piercing the paper and printing variable indicia on the paper; and piercing the paper to form an aperture therethrough.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: December 24, 1996
    Inventors: Jerry W. Brown, Stewart Brubaker