Patents by Inventor Robertus J. C. Koster

Robertus J. C. Koster 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).

  • Detergent composition containing low levels of amine oxides
    Patent number: 4470923
    Abstract: Detergent compositions having enhanced soil release and cleaning properties include from 0.1%-1.5% amine oxide having at least one long chain group and may include peroxy-bleach and detergent builder, and provide an alkaline laundry pH.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: September 11, 1984
    Assignee: The Procter & Gamble Company
    Inventor: Robertus J. C. Koster
  • Detergent composition containing low levels of amine oxides
    Patent number: 4391726
    Abstract: Detergent compositions having enhanced soil release and cleaning properties include from 0.1%-1.5% amide oxide having at least one long chain group and may include peroxybleach and detergent builder, and provide an alkaline laundry pH.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: July 5, 1983
    Assignee: The Procter & Gamble Company
    Inventor: Robertus J. C. Koster
  • Detergent composition containing low level of substituted polyamines
    Patent number: 4372882
    Abstract: Detergent compositions containing low levels of substituted polyamines are disclosed. The polyamines are substituted by one long chain alkyl or alkenyl group and by at least two alkylene oxide radicals attached to different nitrogens. Preferred compositions produce a laundry liquor pH in the range from 8.5-12.0; and frequently contain water-soluble or water-insoluble detergent builders.These compositions exhibit a broad range of textile treatment benefits particularly enhanced soil release and cleaning properties.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: February 8, 1983
    Assignee: The Procter & Gamble Company
    Inventors: Robertus J. C. Koster, Volker Six, Peter Hale
  • Highly concentrated fatty acid containing liquid detergent compositions
    Patent number: 4285841
    Abstract: Builder-free highly concentrated homogeneous fatty acid containing liquid detergent compositions are disclosed. The surface-active system in addition to the fatty acids also contains substantial amounts of anionic sulfonate/sulfate detergents and nonionic ethoxylates. The compositions are mildly acid to neutral and are capable of providing unexpectedly superior textile cleaning benefits, especially on oily and bleach sensitive soils.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: August 25, 1981
    Assignee: The Procter & Gamble Company
    Inventors: Christian R. Barrat, Jean Wevers, Robertus J. C. Koster