Patents by Inventor Dennis D. Padilla

Dennis D. Padilla 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: 6596182
    Abstract: A process for removing heavy metals from water is provided. The process includes the steps of introducing magnetite to a quantity of water containing heavy metal. The magnetite is mixed with the water such that at least a portion of, and preferably the majority of, the heavy metal in the water is bound to the magnetite. Once this occurs the magnetite and absorbed metal is removed from the water by application of a magnetic field. In most applications the process is achieved by flowing the water through a solid magnetized matrix, such as steel wool, such that the magnetite magnetically binds to the solid matrix. The magnetized matrix preferably has remnant magnetism, but may also be subject to an externally applied magnetic field. Once the magnetite and associated heavy metal is bound to the matrix, it can be removed and disposed of, such as by reverse water or air and water flow through the matrix.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: July 22, 2003
    Assignee: The Regents of the University of California
    Inventors: F. Coyne Prenger, Dallas D. Hill, Dennis D. Padilla, Robert M. Wingo, Laura A. Worl, Michael D. Johnson