Patents by Inventor John M. Sheepy

John M. Sheepy 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).

  • Defoamer emulsion compositions for pulp mill applications
    Patent number: 7893115
    Abstract: An oil-in-water emulsion useful as a defoamer for pulp and paper mill applications is described. The defoamer has an oil blend (of a triglyceride oil or a mixture of triglyceride oils and silicone), a stabilizing agent (to make the oil blend stable in the emulsion), hydrophobic silica particles, surfactants, dispersants, and other components. The emulsion is usable directly at low concentrations to control foam.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 22, 2011
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Eric O. Fernandez, John M. Sheepy
  • Defoamers for pulp and papermaking applications
    Patent number: 7879917
    Abstract: A defoamer made from a composition that has at least one triglyceride oil or triglyceride oil mixture, at least one silicone, at least one silicone-triglyceride stabilizing agent, hydrophobic silica particles, optionally one or more surfactants and/or dispersants, and optionally one or more thickeners, and optionally one or more biocides. The defoamers described herein have utility in controlling foam in industrial applications. Typically, the defoamer can be used to control foam in pulp and paper applications.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 1, 2011
    Assignee: Hercules Incorporated
    Inventors: Huai N. Cheng, Eric Oswaldo Fernandez, John M. Sheepy