Patents by Inventor Ehrenfried Liebich

Ehrenfried Liebich 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).

  • Flexible electrically heated tiles made from crumb rubber
    Patent number: 6294768
    Abstract: A flexible, heated, non-allergenic mat particularly adapted for use with animals has a flexible layer of recycled crumb rubber formed under heat and pressure with resin. A reflective sheet is disposed in the flexible layer for reflecting heat. A wire forming a heating element is disposed in the flexible layer above the reflective sheet for heating the mat in response to an applied electric current. A plug and socket may be formed in an edge of the flexible layer so that adjacent mats may be electrically coupled to form a larger heated surface.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: September 25, 2001
    Assignee: Advanced Recycling Sciences, Inc.
    Inventor: Ehrenfried Liebich