Patents by Inventor Gerald John Koekemoer

Gerald John Koekemoer 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).

  • Granular carrier material
    Patent number: 3993498
    Abstract: A granular carrier material and process for producing same adapted for use with pesticides. A cake is formed of an intimate mixture of 97-80% by weight attapulgite and 3-20% by weight perlite, the attapulgite and perlite being capable of passing through a 150 ASTM mesh screen. The cake is then heated to a temperature of 450.degree.-780.degree. C. and is broken to form a granular solid.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: November 23, 1976
    Assignee: Cullinan Holdings Limited
    Inventor: Gerald John Koekemoer