Patents by Inventor Frank Loprest

Frank Loprest 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).

  • Anionic/cationic surfactant mixtures
    Patent number: 5472455
    Abstract: Complexes of anionic and cationic surfactants have been found to remove oily stains from fabrics remarkably better than either the cationic or anionic surfactant from which they are formed.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: December 5, 1995
    Assignee: Colgate Palmolive Co.
    Inventors: Ammanuel Mehreteab, Frank Loprest