Patents by Inventor Sylvia M. Lacy

Sylvia M. Lacy 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).

  • Water based demulsifier formulation and process for its use in dewatering and desalting crude hydrocarbon oils
    Patent number: 4737265
    Abstract: Oil is dehydrated and/or desalted by the influence of a dewatering and desalting formulation which can be characterized as an admixture of (i) a demulsifier preferably an alkylene oxide alkyl phenol-formaldehyde condensate such as a poly ethoxylated nonylphenolformaldehyde condensate and (ii) a deoiler which is usefully a polyol such as ethylene glycol or poly (ethylene glycol) of Mw ranging from 106 to 44,000 and preferably ethylene glycol.The aqueous formulation may usefully contain a cosolvent such as isopropanol.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: April 12, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Philip Merchant, Jr., Sylvia M. Lacy
  • Process for the removal of solids from an oil
    Patent number: 4692237
    Abstract: A process for removing suspended solids, particularly difficultly filterable inorganic solids, from an oil obtained as a refinery process fraction from steam and catalytic cracking units, shale oil retorting process fraction, or from coal conversion processes by adding to the oil an agglomerating agent which is a polyelectrolyte, usefully a water-in-oil emulsion of a water-soluble polymer whereby said solids are clustered together into readily separable agglomerates.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: September 8, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Edward C. Hsu, Philip Merchant, Jr., Dean L. Smith, Jr., Kevin P. Kelly, Sylvia M. Lacy
  • Water based demulsifier formulation and process for its use in dewatering and desalting crude hydrocarbon oils
    Patent number: 4551239
    Abstract: Oil is dehydrated and/or desalted by the influence of a dewatering and desalting formulation which can be characterized as an admixture of (i) a demulsifier preferably an alkylene oxide alkyl phenol-formaldehyde condensate such as a poly ethoxylated nonylphenol-formaldehyde condensate and (ii) a deoiler which is usefully a polyol such as ethylene glycol or poly (ethylene glycol) of Mw ranging from 106 to 44,000 and preferably ethylene glycol.The aqueous formulation may usefully contain a cosolvent such as isopropanol.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: November 5, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Philip Merchant, Sylvia M. Lacy