Patents by Inventor Robert Sam Marshall

Robert Sam Marshall 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).

  • Methods of evaluating concrete samples using multi-phase analysis
    Patent number: 12761205
    Abstract: A method of evaluating a concrete sample includes providing the concrete sample including a main body made of a concrete material including an aggregate and a paste, isolating a portion of the aggregate from the main body, and isolating a portion of the paste from the main body and the isolated portion of the aggregate. The method also includes separately analyzing two or more of the isolated portion of the aggregate, the isolated portion of the paste, and the main body. Based on the analyses, the method includes determining whether the concrete material includes one or more sources of failure.
    Type: Grant
    Filed: February 6, 2024
    Date of Patent: October 13, 2026
    Assignee: Missouri Highways and Transportation Commission
    Inventor: Robert Sam Marshall
  • METHODS FOR QUANTITATIVELY ANALYZING CHROMATE COATINGS ON METAL SUBSTRATES
    Publication number: 20260110638
    Abstract: The present disclosure is directed to methods of quantitatively analyzing chromate coatings, more particularly, to methods of determining mass and/or mass-per-unit-area of chromate coatings on metal substrates.
    Type: Application
    Filed: October 17, 2024
    Publication date: April 23, 2026
    Inventor: Robert Sam Marshall
  • METHODS OF EVALUATING CONCRETE SAMPLES USING MULTI-PHASE ANALYSIS
    Publication number: 20250251386
    Abstract: A method of evaluating a concrete sample includes providing the concrete sample including a main body made of a concrete material including an aggregate and a paste, isolating a portion of the aggregate from the main body, and isolating a portion of the paste from the main body and the isolated portion of the aggregate. The method also includes separately analyzing two or more of the isolated portion of the aggregate, the isolated portion of the paste, and the main body. Based on the analyses, the method includes determining whether the concrete material includes one or more sources of failure.
    Type: Application
    Filed: February 6, 2024
    Publication date: August 7, 2025
    Inventor: Robert Sam Marshall