Patents by Inventor Enrico Pignatelli

Enrico Pignatelli 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).

  • Fuel saving device
    Patent number: 3939866
    Abstract: This invention relates to means for restricting the "breathing" of closed containers of volatile fluids within desired limits of pressure and/or vacuum, and in one embodiment includes two coaxial counter-directional, pressure relief valves for use in auto gasoline tanks.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: February 24, 1976
    Assignee: COM. E. IRA, S.r.C.
    Inventor: Enrico Pignatelli