Patents by Inventor Marvin S. Cohen

Marvin S. Cohen 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).

  • Patent number: 5326016
    Abstract: A method for removing an individual surface mounted electrical component from a printed circuit board retaining a plurality of other components. The individual component has a plurality of leads connected to circuitry on said board by a connection alloy comprising at least two constituent metals and having a given melting point less than that of either of said constituent metals. The method includes the steps of obtaining a removal alloy composed of a plurality of constituent metals and having a particular melting point below the given melting point; heating the removal alloy to a temperature greater than the particular melting point but below the given melting point so as to produce a molten state thereof; contacting the connection alloy on all of the leads with the molten removal alloy and causing thereby a reaction producing a molten state for the connection alloy; and separating the individual component from the printed circuit board while retaining thereon the other components.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: July 5, 1994
    Inventors: Marvin S. Cohen, Marcio A. Lopes