Patents Examined by Eyle Yvonne
  • Patent number: 7279598
    Abstract: Disclosed is a process for separating and recovering 3-hydroxypropionic acid from an aqueous solution comprising 3-hydroxypropionic acid and acrylic acid, comprising counter current extracting the aqueous solution with ethyl acetate extractant. Further disclosed is a process for separating and recovering 3-hydroxypropionic acid and acrylic acid from an aqueous solution comprising 3-hydroxypropionic acid and acrylic acid.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: October 9, 2007
    Inventors: Xiangsheng Meng, Paraskevas Tsobanakis, Jeffrey Malsam, Timothy Abraham