Patents by Inventor Liem D. Vu

Liem D. Vu 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).

  • Patent number: 5284598
    Abstract: An improved process for making a mild, detergent-soap, toilet bar containing a C6-C18 acyl isethionate as the principal surfactant in combination with minor proportions of C12-C20 fatty acids, a water soluble soap and water which comprises the step of forming a liquid mixture of said acyl isethionate, fatty acids and soap at a temperature of about 85.degree. C. to 105.degree. C. in the presence of about 0.5% to 2.5% by weight, based upon the bar, of vegetable oil prior to processing said liquid mixture on a chill roll to form particles which are further processed to yield said bar, said liquid mixture having reduced viscosity and being readily pumpable as compared to a liquid mixture prepared in the absence of said vegetable oil. The bar produced by the foregoing process also is part of the invention.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: February 8, 1994
    Assignee: Colgate-Palmolive Company
    Inventors: Ravi Subramanyam, Liem D. Vu, Ben Gu