Patents by Inventor Richard Frederich Sutton, Jr.

Richard Frederich Sutton, Jr. 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).

  • High modulus polyimide compositions useful as dielectric substrates for electronics applications, and methods relating thereto
    Patent number: 6956098
    Abstract: The substrates of the present invention comprise a polyimide base polymer derived at least in part from collinear monomers together with crankshaft monomers. The resulting polyimide material has been found to provide advantageous properties, particularly for electronics type applications.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: October 18, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Donald Summers, Richard Frederich Sutton, Jr., Brian Carl Auman
  • High modulus polyimide blend
    Patent number: 5939498
    Abstract: An intimate polyimide blend, prepared by chemical conversion, containing from 25 to 50 weight % of a first polyimide derived from 90 to 100 mole % of 3,3', 4,4'-biphenyltetracarboxylic dianhydride, 0 to 10 mole % of pyromellitic dianhydride and p-phenylenediamine and from 50 to 75 weight % of a second polyimide derived from pyromellitic dianhydride, from 20 to 50 mole % of p-phenylenediamine and from 50 to 80 mole % of 4,4'-diaminodiphenylether. The polyimide blend provides blister free films having high modulus and low thermal expansion coefficients for use in electronics applications.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: August 17, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Frederich Sutton, Jr., Darrel Eugene Coverdell