Patents by Inventor Karl W. Immel

Karl W. Immel 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).

  • High density rubber compounds
    Patent number: 7144940
    Abstract: A rubber compound comprising any raw rubber, from about 5% to about 75% by weight, and a zinc oxide dispersion, from about 25% to about 95% by weight. The specific gravity of the compound is within the range from about 1.4 gm/cc to about 3.4 gm/cc. The resulting material is a soft, pliable and flexible rubber with a relatively high specific gravity. Further, the compound is non-toxic, containing no known hazardous ingredients. The compound is a good alternative to metallic weights or metallic-filled rubbers currently used in the fields of sporting goods, exercise equipment, rehabilitation equipment, and any other manufacturing arenas.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: December 5, 2006
    Assignee: CMI Rubber Company, Inc.
    Inventor: Karl W. Immel