Patents by Inventor Scott E. Lehrer

Scott E. Lehrer 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).

  • Settling aids for solids in hydrocarbons
    Patent number: 5476988
    Abstract: A method for accelerating the settling of finely divided solids in hydrocarbon fluids comprising adding to the hydrocarbon a sufficient settling amount of quaternary fatty ammonium compound. Preferably, the hydrocarbon is a fluid catalytic cracker slurry containing spent catalyst fines.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: December 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul R. Hart, Wiley L. Parker, Alan E. Goliaszewski, April Jean, Scott E. Lehrer
  • Neutralizing amines with low salt precipitation potential
    Patent number: 5283006
    Abstract: A method for neutralizing acidic species and inhibiting the deposition of amine acid salts on the internal surfaces of elevated temperature processing units in a petroleum refinery comprising adding to the hydrocarbon liquid being processed therein a tertiary amine, including trimethylamine and triethylamine.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: February 1, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott E. Lehrer, James G. Edmondson
  • Neutralizing amines with low salt precipitation potential
    Patent number: 5211840
    Abstract: A process for adding an amine having a pKa of between 5 and 8 to a petroleum refinery distillation unit for the purpose of neutralizing acidic species contained in the hydrocarbon feedstock. The use of these amines raises the dew point pH sufficiently to prevent corrosion of the metallic surfaces of the overhead equipment while reducing the potential for the precipitation of amine salts.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: May 18, 1993
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott E. Lehrer, James G. Edmondson
  • Method of inhibiting corrosion of metal surfaces in contact with a corrosive hydrocarbon containing medium
    Patent number: 5019341
    Abstract: Hydrocarbon soluble polyamidoamines prepared from tallowtriamine and/or tallowtetramine--(methyl)acrylate reactants are effective corrosion inhibitors for metal surfaces in contact with corrosive hydrocarbon mediums even under alkaline conditions.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: May 28, 1991
    Assignee: Betz Laboratories, Inc.
    Inventors: Joseph H. Y. Niu, James G. Edmondson, Scott E. Lehrer