Patents Represented by Attorney, Agent or Law Firm Barbara C. Siegell, Esq.
  • Planar polymeric waveguide devices with temperature dependence control features
    Patent number: 6684019
    Abstract: An optical signal device which is temperature sensitive and has at least one waveguide layer and at least one material incorporated into the device having a coefficient of thermal expansion of from about 20 to 200 ppm/°K sufficient to impart tensile stress to the waveguide layers as the temperature of the optical signal device changes.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: January 27, 2004
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert A. Norwood, Louay Eldada, Shing Yin, Cathy Glass, Robert M. Blomquist