Patents by Inventor Malcolm A. Shaw

Malcolm A. Shaw 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).

  • Fabric softening composition and a process for preparing it from cationic surfactant and thickener
    Patent number: 4379059
    Abstract: A rinse conditioner containing cationic surfactant and optionally other surfactants or fatty materials is prepared to relatively high viscosity at which it is stable. The process step necessary to achieve this is first to prepare a relatively mobile dispersion of the active materials and to thicken this mobile dispersion with a nonionic or weakly anionic thickener. Examples of such thickeners are guar gum, polyvinylacetate and polyacrylamide.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: April 5, 1983
    Assignee: Lever Brothers Company
    Inventors: John A. Hockey, Malcolm A. Shaw, John L. Wilby, Allan A. Wilson