Patents by Inventor Stephen H. Carr

Stephen H. Carr 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).

  • Process for preparing polyacrylonitrile doped with Prussion blue
    Patent number: 4160760
    Abstract: A method for interacting Prussian blue with polyacrylonitrile in the presence of dimethylformamide to produce a polymer solid exhibiting a high degree of color fastness, levelness, and stability and having enhanced and highly useful electrical properties.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: July 10, 1979
    Assignee: Northwestern University
    Inventors: Stephen H. Carr, Samuel I. Stupp