Patents by Inventor Enzo Calloni

Enzo Calloni 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).

  • Purification of oils containing solid matters in suspension
    Patent number: 4855044
    Abstract: A process and apparatus for the purification of oils, such as perfluoropolyether oils or silicone oils or oils based on hydrocarbons, polluted by various impurities and in particular by solid matters in suspension, which solid matters can be filtered only with difficulty on conventional filters, comprising a filtration carried out by means of a filter of the tangential-flow type, wherein the pores of the filter element have a diameter below 0.4 micron.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: August 8, 1989
    Assignee: Ausimont S.p.A.
    Inventors: Enzo Calloni, Maurizio Valente, Alfonso Raiola
  • Use of perfluoropolyethers in mechanical pumps
    Patent number: 4753744
    Abstract: A process for the generation of vacuums .ltoreq.5.10.sup.-4 torr by means of mechanical pumps, comprising using as operative fluid a perfluoropolyether having neutral end groups and containing light products, having an average molecular weight equal to or lower than 1,000, in amounts lower than or equal to 50 ppm.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: June 28, 1988
    Assignee: Ausimont S.p.A.
    Inventors: Enzo Calloni, Adriana Tasca, Luigi Stoppa
  • Purification of oils containing solid matters in suspension
    Patent number: 4734207
    Abstract: A process and apparatus for the purification of oils, such as perfluoropolyether oils or silicone oils or oils based on hydrocarbons, polluted by various impurities and in particular by solid matters in suspension, which solid matters can be filtered only with difficulty on conventional filters, comprising a filtration carried out by means of a filter of the tangential-flow type, wherein the pores of the filter element have a diameter below 0.4 micron.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: March 29, 1988
    Assignee: Ausimont S.p.A.
    Inventors: Enzo Calloni, Maurizio Valente, Alfonso Raiola