Patents by Inventor Johannes W. A. Overkamp

Johannes W. A. Overkamp 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).

  • P-sulphophenyl alkyl carbonates and detergent compositions and detergent additives containing these compounds
    Patent number: 5043089
    Abstract: The present disclosure relates to novel p-sulphophenyl alkyl carbonates, wherein the alkyl group contains 6 to 10 carbon atoms. These compounds are suitable bleaching activators. Also disclosed are detergent additives and detergent compositions containing these compounds.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: August 27, 1991
    Assignee: Akzo N.V.
    Inventors: Andreas J. H. Nollet, John Meijer, Johannes W. A. Overkamp
  • P-sulphophenyl carbonates and detergent compositions and detergent additives containing these compounds
    Patent number: 4686061
    Abstract: This disclosure relates to novel compounds of the class of the p-sulphophenyl carbonates, viz. mono-p-sulphophenyl carbonates derived from ethoxylated alcohols and bis-p-sulphophenyl dicarbonates derived from alkane diols and poly(ethylene glycols). The novel compounds are efficient bleaching activators. The disclosure also relates to detergent additives and detergent compositions wherein the novel compounds are contained.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: August 11, 1987
    Assignee: Akzo NV
    Inventors: Andreas J. H. Nollet, John Meijer, Johannes W. A. Overkamp