Patents by Inventor Donald F. Hayes

Donald F. Hayes 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).

  • Remediation with ozone of sediments containing organic contaminants
    Patent number: 7115203
    Abstract: A system for treating sediments contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs) and other contaminants polyaromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) includes treating the sediments with ozone to react the contaminants. The system is particularly effective for remediation of PCBs. In an in-situ system for remediating sediments in underwater sediment beds that are contaminated with (PCBs) and other contaminants, the contaminated sediments are treated with ozone with an ozonator conveyed over the sediment bed to mix the sediment with the ozone. The ozone reacts with the PCBs to form more reactive and biodegradable products. The treated sediment is then redeposited upon the sediment bed.
    Type: Grant
    Filed: October 10, 2005
    Date of Patent: October 3, 2006
    Assignee: University of Utah Research Foundation
    Inventors: Donald F. Hayes, Puikwan Andy Hong
  • Remediation with ozone of sediments containing organic contaminants
    Patent number: 7011749
    Abstract: A system for treating sediments contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs) and other contaminants polyaromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) includes treating the sediments with ozone to react the contaminants. The system is particularly effective for remediation of PCBs. In an in-situ system for remediating sediments in underwater sediment beds that are contaminated with (PCBs) and other contaminants, the contaminated sediments are treated with ozone with an ozonator conveyed over the sediment bed to mix the sediment with the ozone. The ozone reacts with the PCBs to form more reactive and biodegradable products. The treated sediment is then redeposited upon the sediment bed.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: March 14, 2006
    Assignee: University of Utah Research Foundation
    Inventors: Donald F. Hayes, Puikwan A. Hong