Patents by Inventor Giorgino Perna

Giorgino Perna 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 for manufacturing investment molds
    Patent number: 4576216
    Abstract: A process for making an investment mold wherein a paste composition is used as the separating layer between the investment mould of refractory material and the surface of the metal container in which the investment mould itself is located. The composition is constituted by an organic component which can be eliminated by thermal degradation at temperatures above 200.degree. C. and a refractory mineral component which is stable at the casting temperature of the alloy used in the casting process. In a preferred embodiment, the composition comprises vaseline, talc and kaolin.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: March 18, 1986
    Assignee: Newellpharma s.r.l.
    Inventor: Giorgino Perna