Patents by Inventor Walter Nagel

Walter Nagel 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).

  • Water based compositions with improved substrate adhesion
    Patent number: 5739232
    Abstract: Curable and cured water based compositions having improved substrate adhesion, methods for their preparation and uses are provided. The coating and adhesive compositions comprise a water soluble compound, a metal salt of an .alpha., .beta.-ethylenically unsaturated compound, and a cure initiator. The compositions of the present invention are useful as substrate coating and adhesive compositions.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: April 14, 1998
    Assignee: Sartomer Company
    Inventors: Thomas W. Hazell, Walter Nagel, C. Richard Costin, Gary W. Ceska
  • System and method for determining the relative permeability of an earth formation surrounding a wellbore
    Patent number: 4420975
    Abstract: A method for determining the relative permeability of an earth formation surrounding a wellbore having a longitudinal axis comprising the steps of injecting a fluid into the wellbore such that the fluid invades the earth formation, measuring at different points in time a quantity that varies in response to the radius from the wellbore axis of the fluid invasion into the earth formation, determining in response to said quantity measurements the radius from the wellbore axis of the fluid invasion into the earth formation, and determining in response to said radii determinations the relative permeability of the earth formation. A system for performing the method is also disclosed.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: December 20, 1983
    Assignee: Marathon Oil Company
    Inventors: Walter A. Nagel, David J. Walsh