Patents by Inventor Robert R. Caycraft

Robert R. Caycraft 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).

  • Odor control composition and method of using same
    Patent number: 5308610
    Abstract: A method of controlling odors from a hydrocarbon-containing sludge including the steps of mixing a quaternary ammonium compound with water, adding a surface-active agent to the mixture of the quaternary ammonium compound and water, and dispersing the mixture into the hydrocarbon-containing sludge. A masking agent may be introduced to the mixture of the water, the quaternary ammonium compound, and the surface-active agent. A pH control agent is added to this mixture, along with a quantity of a polyglycol ether. The quaternary ammonium compound is benzalkonium chloride. The surface-active agent is butyl cellosolve. The masking agent is limonene. The step of dispersing the mixture includes spraying the mixture onto the hydrocarbon-containing sludge.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: May 3, 1994
    Inventors: Ronald W. Bowman, Robert R. Caycraft, L. C. Gramms, E. P. Caballero