Patents by Inventor Martin C. Rabenhorst

Martin C. Rabenhorst 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).

  • Systems, Methods and Indicator Materials for Assessing Reduction State in Soils
    Publication number: 20230314398
    Abstract: The present invention relates an indicator system for assessing a reduction state of unconsolidated material that includes a delivery tube defining an interior chamber, and a substrate disposed within the interior chamber and including a reactive coating thereon. The reactive coating is at least partially removable from the substrate upon exposure to a reducing condition of unconsolidated material over a period of time. An indicator device including a reactive coating comprising a manganese oxide is also disclosed.
    Type: Application
    Filed: April 10, 2023
    Publication date: October 5, 2023
    Applicant: University of Maryland, College Park
    Inventor: Martin C. Rabenhorst
  • Systems, methods and indicator materials for assessing reduction state in soils
    Patent number: 11656215
    Abstract: The present invention relates an indicator system for assessing a reduction state of unconsolidated material that includes a delivery tube defining an interior chamber, and a substrate disposed within the interior chamber and including a reactive coating thereon. The reactive coating is at least partially removable from the substrate upon exposure to a reducing condition of unconsolidated material over a period of time. An indicator device including a reactive coating comprising a manganese oxide is also disclosed.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 23, 2023
    Assignee: University of Maryland, College Park
    Inventor: Martin C. Rabenhorst
  • Systems, Methods and Indicator Materials for Assessing Reduction State in Soils
    Publication number: 20190285607
    Abstract: The present invention relates an indicator system for assessing a reduction state of unconsolidated material that includes a delivery tube defining an interior chamber, and a substrate disposed within the interior chamber and including a reactive coating thereon. The reactive coating is at least partially removable from the substrate upon exposure to a reducing condition of unconsolidated material over a period of time. An indicator device including a reactive coating comprising a manganese oxide is also disclosed.
    Type: Application
    Filed: October 30, 2017
    Publication date: September 19, 2019
    Applicant: University of Maryland, College Park
    Inventor: Martin C. Rabenhorst
  • Synthetic iron oxides and their use as an indicator of reduction in soils (IRIS)
    Patent number: 7550297
    Abstract: The present invention present invention relates to improved IRIS Fe oxide paint compositions, to the dried (or cured) residue of such paints, and to devices upon which such paint compositions have been applied (IRIS devices) used to assess reducing conditions in soils, especially wetland soils. The improved IRIS Fe oxide paints contain from about 30 to about 70 mole percent goethite, more preferably, from about 40 to about 60 mole percent goethite, and still more preferably, about 50 mole percent goethite.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 23, 2009
    Assignee: University of Maryland, College Park
    Inventor: Martin C. Rabenhorst