Patents by Inventor Antonio P. Spairisano

Antonio P. Spairisano 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 for manufacturing plastic encapsulated semiconductor devices
    Patent number: 4888307
    Abstract: A method for correctly positioning a metallic plate supporting a semiconductor chip in a mold used for encapsulation, wherein according to a first solution, at least a pair of retractable locating pins are utilized together with a lead connected to the supporting plate. The ends of the locating pins are retracted in the final phase of encapsulation, from the surfaces of the plate, whereas in the initial phase they are in direct contact with the surfaces. According to a second solution, a pair of clamping pins are indirectly connected to the plate through the interposition of insulating thicknessings.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: December 19, 1989
    Assignee: SGS Microelettronica S.p.A.
    Inventors: Antonio P. Spairisano, Marino Cellai