Patents by Inventor Bettina E. Bonsall

Bettina E. Bonsall 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).

  • Method of coating pre-primed polyolefin films
    Patent number: 6004680
    Abstract: A method for providing improved adhesion of a waterborne, inorganic barrier coating to polyolefin substrate is described. The method involves corona-treatment of the substrate and applying a barrier coating composition.The polyolefin substrate is coated with an acrylic primer layer and then an inorganic barrier layer of a copolysilicate of lithium and potassium is applied.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 21, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Jean-Claude Abed, Bobby N. Furr, Bettina E. Bonsall, Douglas R. Holcomb
  • Self-assembled optical media
    Patent number: 5246747
    Abstract: Optical media formed from a water soluble polymer and liquid crystal forming amphiphile are disclosed and claimed. The polymer and amphiphile are cast into a film which exhibits an optical axis of symmetry perpendicular to the film surface.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: September 21, 1993
    Assignee: Hoechst Celanese Corp.
    Inventors: Gunilla E. Gillberg-LaForce, Hartmann Leube, Leroy McKenzie, Elizabeth A. Reeder, Josefina Pruksarnukul, Bettina E. Bonsall
  • Thin film optical medium of a multiple amphiphilic bilayer composite
    Patent number: 5246748
    Abstract: This invention provides novel self-assembled multilayer organic thin films including an azo-benzene chromophore which initially appear substantially amorphous when viewed perpendicular to the film surface, but are subsequently treated with a laser in selected areas so that such portions exhibit photo-induced birefringence.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: September 21, 1993
    Assignee: Hoechst Celanese Corp.
    Inventors: Gunilla E. Gillberg-Laforce, David E. Nikles, Leroy McKenzie, Bettina E. Bonsall