Patents by Inventor Peter A. BERTASI

Peter A. BERTASI 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).

  • Publication number: 20240391791
    Abstract: Methods for making an aqueous polyaluminum chloride (PAC) are disclosed that include adding an amount of a chloride-containing aluminum compound simultaneously with an amount of a base to a reaction vessel, mixing the two solutions in the reaction vessel, to produce a mixture, until a pH between 4.5 and 10 of the mixture is attained, maintaining the pH of the mixture between 4.5 and 10 during the mixing to produce an aluminum hydroxide precipitate dispersed in a liquid, allowing the aluminum hydroxide precipitate in the mixture to settle and creating a supernatant liquid, removing an amount of the supernatant liquid from the mixture to form a slurry, and adding a low- to mid-basicity polyaluminum chloride solution, an aluminum chloride solution, and/or a hydrochloric acid solution to the slurry to dissolve the aluminum hydroxide precipitate to form the aqueous polyaluminum chloride.
    Type: Application
    Filed: August 5, 2024
    Publication date: November 28, 2024
    Inventors: Michael R. Oldfield, Peter A. Bertasi, Brian C. Reed, Waldo Miller, Keith Braud
  • Patent number: 12054400
    Abstract: Methods for making a sulfated polyaluminum chloride (PACS) flocculating agent solution, which may be aqueous, include neutralizing an aqueous sulfate-containing aluminum compound with an aqueous base to produce an aluminum hydroxide precipitate dispersed in a liquid, settling the aluminum hydroxide precipitate to create a supernatant liquid, removing an amount of the supernatant liquid to leave a remainder that contributes a selected concentration of sulfate to the PACS, and bringing the precipitate back into solution thereby forming the PACS flocculating agent.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 6, 2024
    Inventors: Michael R. Oldfield, Peter A. Bertasi, Brian C. Reed, Waldo Miller, Keith Braud
  • Publication number: 20170113943
    Abstract: Methods for making a sulfated polyaluminum chloride (PACS) flocculating agent solution, which may be aqueous, include neutralizing an aqueous sulfate-containing aluminum compound with an aqueous base to produce an aluminum hydroxide precipitate dispersed in a liquid, settling the aluminum hydroxide precipitate to create a supernatant liquid, removing an amount of the supernatant liquid to leave a remainder that contributes a selected concentration of sulfate to the PACS, and bringing the precipitate back into solution thereby forming the PACS flocculating agent.
    Type: Application
    Filed: June 12, 2015
    Publication date: April 27, 2017
    Inventors: Michael R. OLDFIELD, Peter A. BERTASI, Brian C. REED, Waldo MILLER, Keith BRAUD