Patents by Inventor Heidi M. Gordon

Heidi M. Gordon 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).

  • Analytic method for use in electronic circuit assembly operations
    Patent number: 5201114
    Abstract: The accuracy of detection of the quantity of a rosin flux residue (18) left on an electronic assembly (11) after a cleaning operation is improved by using gel permeation chromatography for such detection.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: April 13, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Iris Artaki, Heidi M. Gordon, Urmi Ray
  • Nonlinear optical devices and methods
    Patent number: 5155620
    Abstract: An optical waveguide circuit including a nonlinear optical device comprises a metal ground plane (21), a polymer core layer (25) in which optical waves are propagated, and polymer clad layers (22 and 26) on opposite sides of the core layer. The waveguide paths are defined by troughs (23) in one of the clad layers. The nonlinear device is made by electrooptically poling part of the core layer which contains a nonlinear moiety. The clad layers (26 and 22) have a significantly higher conductivity than that of the core layer (25) which improves the efficiency of the electrooptic poling.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: October 13, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Heidi M. Gordon, William R Holland, Hung C. Ling, Gary L. Wolk