Patents by Inventor Anna K. St. Clair

Anna K. St. Clair 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).

  • Polyimides containing the pentafluorosulfanylbenzene moiety
    Patent number: 5302692
    Abstract: The diamine, 1,3-diamino-5-pentafluorosulfanylbenzene (DASP), was reacted with various dianhydrides to form polyimides containing an SF.sub.5 moiety. These polyimides exhibit high glass transition temperatures, high density, low solubility, and low dielectric properties. These polymers were used to prepare semi-permeable membranes, wire coatings, and films and are useful for electronic, space and piezoelectric applications.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: April 12, 1994
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Adminstration
    Inventors: Anna K. St. Clair, Terry L. St. Clair