Patents by Inventor Mark A. Malwitz

Mark A. Malwitz 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).

  • Environmentally friendly corrosion inhibitor
    Patent number: 9074289
    Abstract: Disclosed and claimed is a method of inhibiting corrosion of a surface in contact with a corrosive environment encountered in oil and gas operations. The method includes contacting the surface with a composition comprising a quaternary nitrogen-containing corrosion inhibitor having the following general formula. The composition is preferably adherent to standards for environmental friendliness but has equal applicability in formulations that include conventional corrosion inhibitors.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: July 7, 2015
    Assignee: NALCO COMPANY
    Inventors: Mark A. Malwitz, Daljinder K. Woloch
  • ENVIRONMENTALLY FRIENDLY CORROSION INHIBITOR
    Publication number: 20130112106
    Abstract: Disclosed and claimed is a method of inhibiting corrosion of a surface in contact with a corrosive environment encountered in oil and gas operations. The method includes contacting the surface with a composition comprising a quaternary nitrogen-containing corrosion inhibitor having the following general formula. The composition is preferably adherent to standards for environmental friendliness but has equal applicability in formulations that include conventional corrosion inhibitors.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 9, 2013
    Inventors: Mark A. Malwitz, Daljinder K. Woloch
  • Corrosion inhibitor composition comprising a built-in intensifier
    Patent number: 7842127
    Abstract: A corrosion inhibitor composition comprising one or more organic solvents, one or more corrosion inhibitor intermediates and about 0.1 to about 20 weight percent of one or more iodide salts dissolved in said composition and methods of using the corrosion inhibitor composition in acid fracturing and matrix acid stimulation of subterranean formations.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: November 30, 2010
    Assignee: Nalco Company
    Inventor: Mark A. Malwitz
  • CORROSION INHIBITOR COMPOSITION COMPRISING A BUILT-IN INTENSIFIER
    Publication number: 20080146464
    Abstract: A corrosion inhibitor composition comprising one or more organic solvents, one or more corrosion inhibitor intermediates and about 0.1 to about 20 weight percent of one or more iodide salts dissolved in said composition and methods of using the corrosion inhibitor composition in acid fracturing and matrix acid stimulation of subterranean formations.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 19, 2008
    Inventor: Mark A. Malwitz