Patents Examined by Lorina M. Douyon
  • Granulation method
    Patent number: 6468957
    Abstract: The invention relates to a neutralization and granulation method wherein a neutralizing foam is used as granulation adjuvant. The neutralizing foam was previously obtained by mixing an anionic surfactant in its acid form, which was expanded using a gaseous medium, and a highly concentrated, aqueous alkaline component, which was expanded using a gaseous medium. The neutralizing foam has an average pore size of less than 10 mm, preferably less than 5 mm and especially less than 2 mm.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: October 22, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Larson, Josef Markiefka, Wilfried Raehse, Wieland Schulze, Matthias Sunder