Patents by Inventor Edward M. Sawicki

Edward M. Sawicki 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).

  • Stable suspension of pigments in aqueous hypochlorite bleach compositions
    Patent number: 4623476
    Abstract: Aqueous hypochlorite laundry bleach compositions containing a suspension of a bleach stable (e.g., Ultramarine Blue) pigment, optical brightener 4,4'-bis(4-phenyl-2H-1,2,3-triazol-2-yl)-2,2'-stilbenedisulfonate, and a certain alkylaryl sulfonate surfactant. Preferred compositions contain a bleach stable organic material having a density of from 0.8 to 1.05 g/cc, which organic material is preferably a perfume, and a bleach stable buffering agent to maintain pH and physical stability.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: November 18, 1986
    Assignee: The Procter & Gamble Company
    Inventors: Bala C. Nayar, Kathleen G. Baier, David A. O'Brien, Edward M. Sawicki