Patents by Inventor Siu L. Ma

Siu L. Ma 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).

  • Patent number: 5460765
    Abstract: Industrial materials can be efficiently pan granulated by grinding the material to 95% minus 150 mesh, feeding this to a pan in conjunction with 1 to 15% seed materials and applying binder solution such that the free moisture content of the green ball is between 8-13% by weight of the feedstock. The granules build up on the seed to a desired size range, say -5 to +8 mesh, in an onion skin manner. Product is sent preferably to a fluid bed dryer for drying. The productivity and classification is very high with yields up to 95% for two mesh size ranges, such as -5 to +8 mesh.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 24, 1995
    Inventors: Gary Derdall, Siu L. Ma