Patents by Inventor Dennis P. Barrett

Dennis P. Barrett 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).

  • Soap-synthetic detergent tablets
    Patent number: 4260507
    Abstract: A personal washing tablet based on tallow soap wherein the lather properties are surprisingly improved by inclusion of up to 40% by weight of active detergent of a defined sulphate/sulphomate synthetic detergent having not more than 10 carbon atoms in a linear chain.
    Type: Grant
    Filed: September 19, 1979
    Date of Patent: April 7, 1981
    Assignee: Lever Brothers Company
    Inventor: Dennis P. Barrett