Patents by Inventor Paul R. Lydigsen

Paul R. Lydigsen 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).

  • Low density polymers and methods of making and using same
    Patent number: 6020387
    Abstract: A low density polymer composition including a polymer component capable of being cured, a low density filler in an amount sufficient to reduce the density of the polymer and a thixotrope present in a sufficient amount to impart a sufficient viscosity and to inhibit separation of the filler from the polymer until after the polymer is cured. The resulting lightweight, filled polymer composition is a strong electrical insulator, has low shrinkage, a low coefficient of thermal expansion, low cured density and a soft filler that does not harden the polymer. Methods of preparing and using the low density polymer compositions are also disclosed.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: February 1, 2000
    Assignee: Caschem, Inc.
    Inventors: William J. Downey, Christopher Andreola, Paul R. Lydigsen, Wayne E. Wright