Patents by Inventor Loren L. Ansell

Loren L. Ansell 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).

  • Fischer-tropsch process water emulsions of hydrocarbons (law548)
    Patent number: 6458855
    Abstract: Stable hydrocarbon in water emulsions are formed by emulsifying the hydrocarbon with a non-ionic surfactant and water obtained from the Fischer-Tropsch process.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: October 1, 2002
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert J. Wittenbrink, Paul J. Berlowitz, Tapan Chakrabaty, Loren L. Ansell
  • Water emulsions of Fischer-Tropsch liquids (LAW516)
    Patent number: 6294587
    Abstract: Fischer-Tropsch liquids, useful as distillate fuels are emulsified with water and a non-ionic surfactant.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: September 25, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert J. Wittenbrink, Paul J. Berlowitz, Tapan Chakrabaty, Loren L. Ansell, Daniel F. Ryan
  • Water emulsions of Fischer-Tropsch waxes
    Patent number: 6284806
    Abstract: Hydrocarbon in water emulsions comprising Fischer-Tropsch process water, at least 20 to about 90 weight percent of a Fischer-Tropsch wax, a first nonionic surfactant having an HLB of at least 11 and a second nonionic surfactant having an HLB less than 11. Said emulsions are liquid at room temperature and pour by ordinary gravity. Also disclosed are methods of making said hydrocarbon in water emulsions.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: September 4, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Tapan Chakrabarty, Robert J. Wittenbrink, Paul J. Berlowitz, Loren L. Ansell
  • Fischer-tropsch wax and crude oil mixtures having a high wax content
    Patent number: 6268401
    Abstract: The invention is a process for producing a mixture of wax and crude oil which can be pumped at ambient temperature. The wax is preferably a Fisher-Tropsch wax. The temperature of the crude oil is controlled to a level below the dissolution temperature of the wax. The wax crystals are homogenized and dispersed into the crude oil to form a mixture. The present invention prevents the wax from dissolving in the crude oil and subsequently re-crystallizing at lower temperatures which can substantially increase the viscosity of the mixture thereby decreasing the effectiveness of transporting the mixture.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: July 31, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Bruce R. Cook, Eric B. Sirota, Hu Gang, Loren L. Ansell