Patents Represented by Attorney John J. Waldmann

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  • Method for controlling pitch in paper industry using PGAC or PGUAC
    Patent number: 5135613
    Abstract: Pitch formation in a paper mill is controlled by a chemical composition of a water-soluble polymer of polycyanoguanidineammoniumchloride (PGAC) or polycyanoguanidineureaammoniumchloride (PGUAC).
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: August 4, 1992
    Assignee: Maxichem, Inc.
    Inventor: John J. Waldmann