Patents by Inventor Nancy C. Hagan

Nancy C. Hagan 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).

  • Solvent developable photoresist film
    Patent number: 4349620
    Abstract: A multi-layer photosensitive film resist (is provided) in which the photosensitive layers consists of a plurality of layers having different properties, e.g., greater adhesion to a copper surface provided by one layer and greater toughness and (possibly) reduced adhesion to a temporary support provided by the other layer.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: September 14, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Clifford R. Cyr, Nancy C. Hagan