Patents by Inventor Robert Helwick

Robert Helwick 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).

  • System and method for treatment of acidic wastewater
    Publication number: 20050051488
    Abstract: A wastewater treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of wastewater to be treated entering into the separation unit operations. The separation unit operations include first and second reverse osmosis devices. The first reverse osmosis device treats wastewater having pH that is less than about 3.5 and the second reverse osmosis device treats wastewater, from the first reverse osmosis device, having a pH that is about 6 or higher.
    Type: Application
    Filed: July 26, 2004
    Publication date: March 10, 2005
    Inventors: Lnsp Nagghappan, Robert Helwick