Patents by Inventor Clayton W. Hackett

Clayton W. Hackett 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).

  • Method and apparatus for recycling cement kiln dust
    Patent number: 6416574
    Abstract: Methods for recycling cement kiln dust are described and involve heating a mixture containing at least one additive, water, and cement kiln dust for a sufficient time and at sufficient temperatures to form cement clinker. The additive contains an organic polyacid, a hydroxy carboxylic acid, a polycarboxylic acid, a saccharide, a carbohydrate, a salt thereof, or combinations thereof. A cement slurry containing water, cement kiln dust, and the above-described additive is also described as well as apparatus for recycling the cement kiln dust.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: July 9, 2002
    Assignee: Southern Ionica Incorporated
    Inventors: Joe C. Steelhammer, Clayton W. Hackett, Milton O. Sundbeck, Jr., John E. Coleman