Patents by Inventor Valentino Petrini

Valentino Petrini 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).

  • Method and equipment for producing solid granules of pitch in the form of cylinders crushed at the ends
    Patent number: 4482517
    Abstract: The pitch is extruded at a suitable temperature through cylindrical nozzles. At the exit from these nozzles the pitch is lowered into water, where a cutter divides it into granules which, deposited on a conveyer belt, remain immersed long enough to permit suitable cooling. Then they undergo drying by hot jets of air.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: November 13, 1984
    Assignee: Carbochimica Italiana S.p.A.
    Inventors: Valentino Petrini, Stefano Preda