Patents by Inventor Arthur F. Payne

Arthur F. Payne 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).

  • Ceramic material
    Patent number: 5177036
    Abstract: A porous granular ceramic material has a granule size of from 1 to 5 mm, a bulk density of from 200 to 700 g/l, preferably 350 to 550 g/l, a porosity of from 50 to 80% v/v, preferably from 65 to 80% v/v, and a liquid absorbency of from 20 to 200%, preferably from 40 to 150%, of water based on the weight of the granular material. The material may be made by calcining a mixture of a clay and a particulate combustible material. The material is suitable for use as animal litter or as an industrial absorbent for liquids.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: January 5, 1993
    Inventors: Franz D. Kunst, Arthur F. Payne, Paul A. Wilkinson