Patents by Inventor Pietro Segota

Pietro Segota 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).

  • Vacuum packaging method
    Patent number: 4922686
    Abstract: A vacuum packaging process and apparatus employ the novel step of deliberately at least partially re-pressurizing the exterior of a packaging receptacle after commencement of the evacuation of the exterior and interior of the receptacle in a chamber. Preferably two separate gas pressure restoration phases are employed, separated by a resumption of the gas extraction, and the receptacle is closed during the second of these gas pressure restoration phases.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: May 8, 1990
    Assignee: W. R. Grace & Co.
    Inventor: Pietro Segota