Patents by Inventor Ron Donhoff

Ron Donhoff 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).

  • Recycling system for hazardous waste disposal
    Patent number: 5922277
    Abstract: A recycling system treats petrochemical types of hazardous waste for disposal. Such waste typically includes in large part, a mixture of hydrocarbons, water, solids (soil particulate), and metals. The recycling system separates the water, solids, hydrocarbons, and metals from one another.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: July 13, 1999
    Inventors: Ron Donhoff, Thomas W. Robertson, Richard Marshall