Patents by Inventor Piero Patarini

Piero Patarini 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).

  • Bimetallic coin blank, particularly for coins and the like
    Patent number: 5094922
    Abstract: A coin blank, particularly for minting of coins and the like, is formed by an external element of metal or metal alloy having a central aperture, on the edge surface of which are cut perimetrally a series of spaced grooves, and by an internal element, of metal or metal alloy different from the former, on the edge surface of which is formed a perimetral ridge, said external and internal elements being coupled inseparably during the minting operation through the plastic flow of the material from said perimetral ridge into said grooves in said external element and through the firm fitting of the material from said ridge into the portions of the edge surface of said central aperture in said external element, provided between adjacent grooves.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: March 10, 1992
    Assignees: Istituto Poligrafico E Zecca Dello Stato, Verres S.R.L. Societa per la Monetazione e Fonderia di Precisione
    Inventors: Nicola Ielpo, Piero Patarini