Patents by Inventor John C. Coburn

John C. Coburn 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).

  • Oriented, shape articles of lyotropic/thermally-consolidatable polymer blends
    Patent number: 5366781
    Abstract: An oriented, shaped article comprising at least about 55% and less than about 80% by weight of a first polymer phase of at least one lyotropic polymer and at least about 20% and less than about 45% by weight of a second polymer phase of at least one thermally-consolidatable polymer and consolidated parts made therefrom.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: November 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John C. Coburn, Hung H. Yang
  • Process for preparing a polyimide film with a preselected value for CTE
    Patent number: 5166292
    Abstract: Formation of polyimide film with a preselected coefficient of thermal expansion is disclosed employing relationships between cure temperature and heating rates.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: November 24, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael T. Pottiger, Brian C. Auman, John C. Coburn, Timothy D. Krizan