Patents by Inventor Guglielmo Fragola

Guglielmo Fragola 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).

  • Process and contrivance for the regeneration of lubricating oils
    Patent number: 4655938
    Abstract: A process and apparatus for the regeneration in operation of lubricating oils having a first stage in which a flow of oil passes through a filtering surface, then a second and third stage in which a portion of the flow of oil is intercepted and sent countercurrently under a pre-established overpressure to the first stage flow and finally, a fourth stage for varying the position of delivery countercurrent to the filtering surface.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: April 7, 1987
    Assignees: RE.MAC.UT., S.p.A., Giorgio Costa
    Inventor: Guglielmo Fragola