Patents Represented by Attorney Kent S. Kokko, Ph.D

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  • Carpet treatment composition comprising polycarboxylate salts
    Patent number: 6074436
    Abstract: A method for imparting soil resistance to unscoured carpets, and a carpet treated in accordance with the method, are provided. In accordance with the method, a substrate comprising unscoured carpet fibers is treated with a salt of a polycarboxylic acid. The treated substrate is found to have enhanced water and oil repellency in both heat cured and room temperature drying conditions.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: June 13, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath, John C. Chang