Patents Represented by Attorney K. William Zerby
  • Patent number: 5932532
    Abstract: Bleaching and cleaning compositions comprising a bleaching compound, one or more bleach activators, and protease enzymes are provided. Thus, laundry detergent compositions which comprise protease, perborate or percarbonate and activators such as benzoyl caprolactain exhibit improved dingy clean-up performance.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: August 3, 1999
    Assignee: Procter & Gamble Company
    Inventors: Chanchal Kumar Ghosh, Gayle Marie Frankenbach, Catherine Michelle Quinn