Patents by Inventor Giorgio Pignattini

Giorgio Pignattini 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).

  • Drip preventing device for dental instruments
    Patent number: 5006067
    Abstract: The device makes use of at least one plenum for each instrument, connected to the water circuit immediately upstream of the relative handpiece. Best results are obtained by connecting two such plenums to the water circuit in parallel, the one charged by the spray air circuit, the other by the power air circuit, as independent operation ensures greater reliability.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: April 9, 1991
    Assignee: Castellini, S.p.A.
    Inventor: Giorgio Pignattini