Patents Represented by Attorney L. Zitver

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  • .alpha.-aminoalkylsulfur compositions
    Patent number: 4751051
    Abstract: The uses of .alpha.-aminoalkyl sulfur compositions and to the preparation thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: June 14, 1988
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
  • Azetidinium salts and process of preparation
    Patent number: 4689418
    Abstract: This invention relates to N,N-diallyl-3-hydroxy azetidinium salts, homo- and co-polymers thereof; and the preparation thereof.This invention also relates to the use of the above polymers as demulsifiers.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: August 25, 1987
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, Eva G. Lovett
  • Process of corrosion inhibition using compounds containing sulfur and amino groups
    Patent number: 4684507
    Abstract: A process for inhibiting the corrosion of ferrous metals in aqueous acidic or briny media comprising the step of adding a composition of the formula ##STR1## where R.sub.1 is a hydrocarbon group, O is a pyridine or substituted pyridine, and X is an anion.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: August 4, 1987
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Inhibition of corrosion in fuels with Mg/Al/Si combinations
    Patent number: 4659339
    Abstract: This invention relates to the inhibition of corrosion resulting from the presence of vanadium and sodium in fuels, for example, in residual fuels, such as in those fuels used in steam boilers, process heaters and gas turbines, etc., by adding Mg/Al/Si combinations thereto. Mg/Al/Si combinations are more effective than other inhibitors at a high Na/V ratio.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: April 21, 1987
    Assignee: Petrolite Corporation
    Inventors: Walter R. May, Michael J. Zetlmeisl