Patents by Inventor David B. Markobrad

David B. Markobrad 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).

  • Corrosion control composition
    Patent number: 5176848
    Abstract: Disclosed are compositions comprising the reaction product of maleic anhydride and at least one alkenylsuccinic anhydride. These compositions when hydrolyzed and neutralized are useful in not only imparting corrosion resistance to ferrous metal surfaces in contact with aqueous systems but also retard or prevent precipitation of alkaline earth salts of organic acids from the aqueous system.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: January 5, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Hyung H. Kang, David B. Markobrad, Eugene A. Weipert
  • Acyloxyalkanesulfonate paste composition and method for preparing same
    Patent number: 4790956
    Abstract: Described are acyloxyalkanesulfonate salt compositions of betwee about 30 and about 80 weight percent of the sulfonate salt, e.g., sodium cocoyl isethionate, between about 2 and about 8 weight percent of a water soluble ethoxylated monohydric alcohol, and the balance water. In a further embodiment, the composition contains small amounts of alkali metal salts of water-soluble inorganic and organic acids.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: December 13, 1988
    Assignee: Mazer Chemicals, Inc.
    Inventors: Eugene A. Weipert, David B. Markobrad