Patents by Inventor Kristi Sonsteby Kemper

Kristi Sonsteby Kemper 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).

  • Tension relieving body support apparatus
    Patent number: 8037562
    Abstract: A mattress including a core foam layer having a first indentation force deflection at twenty five percent compression, a first density and a first thickness. The top outer foam layer has a second indentation force deflection at twenty five percent compression, a second density and a second thickness. The first intermediate foam layer is intermediate and coextensive with the core layer and the top outer layer, and has a third indentation force deflection at twenty five percent compression, a third density and a third intermediate thickness. The first indentation force deflection is greater than the third indentation force deflection and the third indentation force deflection is greater than the second indentation force deflection.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: October 18, 2011
    Assignee: Kemper Support Surfaces, Inc.
    Inventors: Christopher E. Kemper, Kristi Sonsteby Kemper