Patents by Inventor Jeffrey C. Prest

Jeffrey C. Prest 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).

  • Reusable marking system
    Patent number: 4722145
    Abstract: A reusable marking system comprising a high impact styrene plastic marking surface and a specially formulated water soluble marking ink. The ink is carried in a felt tip marker and can be removed from the marking surface using a damp wiper. The marking surface can be permanently marked using screen printing techniques to provide suitable permanent messages or to delineate areas for non-permanent markings.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: February 2, 1988
    Inventor: Jeffrey C. Prest