Patents by Inventor Joseph S. Strukl

Joseph S. Strukl 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).

  • Lubricant overbased detergent-dispersants with improved solubility
    Patent number: 4614602
    Abstract: A lubricant composition is disclosed comprising a major amount of a lubricating oil composition and a minor amount of an overbased detergent-dispersant lubricant additive comprising a reaction product of an alkaline earth metal phenate and an ammonium alkylbenzene sulfonate wherein the phenate and the sulfonate are reacted in the presence of an alcohol of 1 to 4 carbon atoms and said reaction product is stripped to remove ammonia, water and said alcohol.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: September 30, 1986
    Assignee: Amoco Corporation
    Inventors: Joseph J. Valcho, Francis J. Slama, Joseph S. Strukl, Chang-Man Park
  • Oxidative passivation of polyamine-dispersants
    Patent number: 4379064
    Abstract: Mild oxidation of polyamine crankcase dispersants passivates basically reacting polyamine dispersants to fluorocarbon compositions used in engines.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: April 5, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: John A. Cengel, Mark W. Hunt, Joseph S. Strukl, Peter G. Pappas
  • Modified overbased sulfonates and phenates
    Patent number: 4328111
    Abstract: Disclosed are compositions of matter and a method for their manufacture, and lubricating oil compositions containing such compositions. The compositions of matter comprise the reaction product of basic compound comprising overbased metal sulfonate, phenate, or mixtures thereof, with acidic compound comprising organic carboxylic acid, organic carboxylic acid anhydride, phosphoric acid, phosphoric acid ester, thiophosphoric acid ester, or mixtures thereof.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: May 4, 1982
    Assignee: Standard Oil Company (Indiana)
    Inventors: Roger W. Watson, Joseph S. Strukl