Patents Examined by Gregory P. Del Cotto
  • Hard surface cleaners containing chitosan
    Patent number: 6849586
    Abstract: Disclosed herein are acidic aqueous hard surface cleaners and methods for using them. The cleaners include a surfactant and a poly D-glucosamine such as chitosan. They provides residual benefits on the hard surface such as soil resistance and resistance to bacteria, molds and biofilms.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 1, 2005
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Richard W. Avery, Ian Robb