Patents by Inventor Andrea L. Crabb

Andrea L. Crabb 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).

  • Process for compacting calcined kaolin clay
    Patent number: 6761763
    Abstract: Calcined kaolin clay having a high bulk density, improved wet out and slurry incorporation times is produced by using pressure to compact the clay. Other properties of the compacted clay are improved or equivalent to the non-compacted starting calcined clay material.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: July 13, 2004
    Assignee: Thiele Kaolin Company
    Inventors: William H. Wiggins, Sr., Andrea L. Crabb, William H. Wiggins, Jr.
  • Process for compacting calcined kaolin clay
    Publication number: 20040000257
    Abstract: Calcined kaolin clay having a high bulk density, improved wet out and slurry incorporation times is produced by using pressure to compact the clay. Other properties of the compacted clay are improved or equivalent to the non-compacted starting calcined clay material.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: William H. Wiggins, Andrea L. Crabb, William H. Wiggins