Patents by Inventor D. Gerrard Marangoni

D. Gerrard Marangoni 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).

  • Shale Hydration Inhibition Agents for Utilization in Water-based Drilling Fluids
    Publication number: 20120053092
    Abstract: Shale hydration inhibition agents of the general formula: wherein R1, R2, R3, R4, R5 and R6 are as defined herein, are described. In addition, the present application is directed to water-based drilling fluids containing these shale hydration inhibition agents and methods of using such agents to inhibit the hydration or swelling of shale during drilling.
    Type: Application
    Filed: October 9, 2009
    Publication date: March 1, 2012
    Applicant: St. Francis Xavier University
    Inventors: D. Gerrard Marangoni, James Nyangulu, Sean Gillis, Amanda MacInnis, Aleisha McLachlan, Josette Landry
  • GEMINI SURFACTANTS
    Publication number: 20110269652
    Abstract: The invention relates to gemini surfactants of formula IA wherein A is a core derived from an organic polyhydroxy compound; R1 and R2 are each independently a hydrophobic group; and R3 and R4 are each independently a surfactant head group. Such surfactants can be used as components of fluids used in the petroleum industry or used in formulating cleansing compositions or detergent compositions.
    Type: Application
    Filed: October 29, 2009
    Publication date: November 3, 2011
    Applicant: ST. FRANCIS XAVIER UNIVERSITY
    Inventors: D. Gerrard Marangoni, T. Bruce Grindley, Nusrat Jahan, Christian Petropolis, Thomas Tran, Nawal Paul