Patents by Inventor Fred E. Arnold, Jr.

Fred E. Arnold, 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).

  • Phenylethynylbenzophenone-endcapped hyperbranched poly(arylene-ether-ketone-imides)
    Patent number: 7582722
    Abstract: Novel ether-ketone-imide hyperbranched polymers with non-reactive benzophenone or thermally reactive phenylethynyl endgroups were prepared from the corresponding AB2 monomer and benzophenone-based endcapping agent in one-pot fashion. The resulting polymer has repeating units of the formula: where the chain-end groups, Ar's, are 4-benzophenone or 4-benzophenone with ortho, meta- or para-phenylethynyl substituents in the 4?-position.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: September 1, 2009
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Loon-Seng Tan, David H. Wang, Fred E. Arnold, Jr., Tara M. Storage