Patents by Inventor John James Slevin

John James Slevin 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).

  • Prevention of counterfeit markings on semiconductor devices
    Patent number: 7157131
    Abstract: A lidded semiconductor device has a first layer applied to the lid, which first layer is chosen of a material which fluoresces upon application of non-visible electromagnetic waves thereto, for example, ultraviolet light. A second layer is provided over the first layer. Openings extend through the second layer and further extend to a substantial depth into the first layer, for example, generally halfway into the first layer, to expose portions of the first layer.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: January 2, 2007
    Inventors: Richard C. Blish, II, John James Slevin