Patents by Inventor Barbara J. Long

Barbara J. Long 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).

  • Thermally expandable, viscosity modified wax compositions and method of use in actuators
    Patent number: 5772949
    Abstract: A thermally expandable wax composition and its use in polymer-based actuators is disclosed and claimed. The compositions are wax-based and include conductive filler as well as a viscosity modifier to stabilize the composition against segregation. Optionally included are thermoxidative stabilizers.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: June 30, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: M. Ishaq Haider, James E. Kuder, Barbara J. Long, Joseph D. Menczel, James B. Stamatoff, Michael Bayer
  • Electronically and thermally conducting compositions for actuators
    Patent number: 5762830
    Abstract: This invention discloses a thermally expandable composition for use in actuators. The composition contains about 10-50 volume percent hollow glass spheres in a wax or a polymer. The spheres contain a conducting coating affixed thereon. During use in an actuator, the composition is heated to melt the wax or polymer, when the density of the spheres substantially match the density of the melt, thereby substantially eliminating phase separation. The high thermal conductivity of the composition increases the speed of heat transfer out of the composition during the cooling cycles.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: June 9, 1998
    Assignee: Hoechst Celanese Corporation
    Inventors: Barbara J. Long, M. Ishaq Haider, Joseph D. Menczel, James B. Stamatoff
  • Thermally expandable, viscosity modified wax compositions and method of use in actuators
    Patent number: 5709740
    Abstract: A thermally expandable wax composition and its use in polymer-based actuators is disclosed and claimed. The compositions are wax-based and include conductive filler as well as a viscosity modifier to stabilize the composition against segregation. Optionally included are thermoxidative stabilizers.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: January 20, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: M. Ishaq Haider, James E. Kuder, Barbara J. Long, Joseph D. Menczel, James B. Stamatoff, Michael Bayer