Patents by Inventor William J. Sillivan

William J. Sillivan 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).

  • Resin impregnated laminate for wiring board applications
    Patent number: 5314742
    Abstract: Dimensionally stable resin impregnated laminates for printed wiring board applications are reinforced with from 43 to 57 weight percent of nonwoven aramid sheet having a coefficient of thermal expansion of less than 10 ppm per .degree. C, a basis weight of from 0.8 to 4.0 oz/yd.sup.2, a density of from 0.5 to 1.0 g/cc and a Gurley Hill Porosity of less than 10 sec.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: May 24, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Birol Kirayoglu, William J. Sillivan, Melvin P. Zussman