Patents by Inventor John M. Cronan, Jr.

John M. Cronan, Jr. 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).

  • Synergistic biocidal mixtures
    Patent number: 7008545
    Abstract: Synergistic mixtures of biocides and their use to control the growth of microorganisms in aqueous systems are disclosed. The method of using the synergistic mixtures entails adding an effective amount of a nitrogenous compound activated by an oxidant and at least one non-oxidizing biocide to an aqueous system. The amount of activated nitrogenous compound and non-oxidizing biocide is selected to result in a synergistic biocidal effect.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: March 7, 2006
    Assignee: Hercules Incorporated
    Inventors: John M. Cronan, Jr., Michael J. Mayer
  • Methods of using hop acids to control organisms
    Patent number: 6547971
    Abstract: Methods of inhibiting the growth of organisms in aqueous systems such as papermaking systems, cooling systems and process waters of various types, comprises adding to the aqueous system a hop acid. Compositions comprising hop acids and papermaking suspensions or slurries, and/or additives, such as paper making additives, are also provided.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: April 15, 2003
    Assignee: Hercules Incorporated
    Inventors: Alexander W. Breen, John M. Cronan, Jr., Phillip S. Davis, Michael J. Mayer, Freddie L. Singleton
  • FUNGICIDAL METHOD
    Publication number: 20020108730
    Abstract: Use of strobilurins and oudemansins as biocides in aqueous systems is disclosed. Uses include wet-lap preservation, mold proofing, mildew proofing, and other uses where antifungal and/or anti-mildew activity is desired. Aqueous systems treatable with strobilurins and/or oudemansins include pulp and paper systems, oil and gas systems, cooling towers, and heat exchangers.
    Type: Application
    Filed: April 5, 2000
    Publication date: August 15, 2002
    Inventors: John M. Cronan, Jr., Howard A. Cash
  • Fungicidal method
    Patent number: 6428654
    Abstract: Use of strobilurins and oudemansins as biocides in aqueous systems is disclosed. Uses include wet-lap preservation, mold proofing, mildew proofing, and other uses where anti-fungal and/or anti-mildew activity is desired. Aqueous systems treatable with strobilurins and/or oudemansins include pulp and paper systems, oil and gas systems, cooling towers, and heat exchangers.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: August 6, 2002
    Assignee: Hercules Incorporated
    Inventors: John M. Cronan, Jr., Howard A. Cash