Patents by Inventor Robert Donaldson

Robert Donaldson 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 compositions
    Patent number: 4154694
    Abstract: A pourable liquid detergent composition, particularly one containing hypochlorite, comprises an aqueous detergent solution having a yield stress value at 20.degree. C. of from 1 to 21 dynes/cm.sup.2, and dispersed solid particles of a sparingly water-soluble alkaline buffer, particularly calcium or magnesium hydroxide, providing a pH within the range of from 10 to 13.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: May 15, 1979
    Assignee: Lever Brothers Company
    Inventor: Robert Donaldson
  • Pourable liquid compositions
    Patent number: 3956158
    Abstract: A pourable liquid composition such as a detergent scourer comprises an aqueous medium containing a three-dimensional network of insoluble entangled filaments and particulate solid dispersed in the medium and prevented from separating by the filament network.
    Type: Grant
    Filed: January 16, 1974
    Date of Patent: May 11, 1976
    Assignee: Lever Brothers Company
    Inventor: Robert Donaldson