Patents by Inventor James L. Foley

James L. Foley 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).

  • Polydiacetylenes exhibiting extended wavelength absorption maxima
    Patent number: 6005058
    Abstract: Polydiacetylenes prepared from 2,4-hexadiyne monomers substituted with at least one side chain component, exhibit an absorption maximum wavelength maximum greater than that exhibited by polydiacetylenes formed from 1,6-di-N-carbazolyl 2,4-hexadiyne. Preferably, the polydiacetylenes exhibit an absorption maximum that is in the range of visible light. Examples of suitable side chain components of the polydiacetylenes include cyanovinyl aromatic substituents and quinoid substituents. The polydiacetylenes exhibit useful third order nonlinear optical behavior for electromagnetic radiation in the visible and near-infrared electromagnetic wavelength range and can be formed by thermally-based synthesis methods.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: December 21, 1999
    Assignee: University of Massachusetts Lowell
    Inventors: Daniel J. Sandman, James L. Foley