Patents by Inventor Rolf H. van den Berg

Rolf H. van den Berg 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).

  • Suspension and agglomeration of amidoperoxyacids
    Patent number: 5453214
    Abstract: A process for the suspension agglomeration of amidoperoxyacids which leads to improved rheological storage stability of aqueous suspensions made from these agglomerated peroxyacids is disclosed. Also disclosed are aqueous suspensions of stable viscosity made by milling these agglomerates to a mean particle size of about 20 to about 75 microns.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: September 26, 1995
    Assignee: Akzo Nobel N.V.
    Inventors: Rolf H. van den Berg, Richard H. J. Hekkert
  • Process for the preparation of diperoxydodecanedioic acid-containing agglomerates and compositions in which these agglomerates are used as bleaching component
    Patent number: 4919836
    Abstract: A process for the preparation of agglomerates containing diperoxydodecanedioic acid and a water-impermeable material, e.g. lauric acid, which process comprises the successive steps of agitating an aqueous suspension of the peroxy acid in the presence of the water-impermeable material and above the melting point thereof, cooling the suspension of the agglomerated particles thus obtained to a temperature at which the water-impermeable material turns solid, and isolating the resulting agglomerates. The agglomerates obtained are suitable for use as bleaching agent.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: April 24, 1990
    Assignee: Akzo N.V.
    Inventors: John Meijer, Reinder Torenbeek, Rolf H. van den Berg
  • Process for the preparation of diperoxydodecanedioic acid-containing agglomerates and compositions in which these agglomerates are used as bleaching component
    Patent number: 4818425
    Abstract: A process for the preparation of agglomerates containing diperoxydodecanedioic acid and a water-impermeable material, e.g. lauric acid, which process comprises the successive steps of agitating an aqueous suspension of the peroxy acid in the presence of the water-impermeable material and above the melting point thereof, cooling the suspension of the agglomerated particles thus obtained to a temperature at which the water-impermeable material turns solid, and isolating the resulting agglomerates. The agglomerates obtained are suitable for use as bleaching agent.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: April 4, 1989
    Assignee: Akzo N.V.
    Inventors: John Meijer, Reinder Torenbeek, Rolf H. van den Berg