Patents by Inventor Alistair S. Taylor

Alistair S. Taylor 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).

  • Foamable compositions
    Patent number: 5242494
    Abstract: This invention relates to a foamable silicate composition comprising (a) one or more alkali metal silicates, (b) a blowing agent, (c) a hardener which can be an acetate or a formate ester of a di-polyhydric alcohol or a polyoxyalkylene glycol and (d) a surfactant having a hydrophilic-lypophilic balance of at least 8. The formulations are readily produced by mixing the components, are pourable, pumpable and sprayable, and give rise to foams of excellent compressive strength and thermal insulation properties under ambient conditions.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: September 7, 1993
    Assignee: British Technology Group Ltd.
    Inventors: Ian C. Callaghan, Elizabeth C. Cooper, Anne Lepre, Alistair S. Taylor
  • Preparaton of HIPR emulsions and transportation thereof
    Patent number: 4934398
    Abstract: An HIPR (high internal phase ratio) emulsion of oil in water is prepared by directly mixing 70 to 98% by volume of a viscous oil having a viscosity in the range 200 to 250,000 mPa.s at the mixing temperature with 30 to 2% by volume of an aqueous solution of an emulsifying surfactant or an alkali, percentages being expressed as percentages by volume of the total mixture. Mixing is effected under low shear conditions in the range 10 to 1,000 reciprocal seconds in such manner that an emulsion is formed comprising highly distorted oil droplets having mean droplet diameters in the range 2 to 50 micron separated by thin interfacial films.The emulsions are much less viscous than the oils from which they are prepared and may, optionally after dilution, be pumped through a pipeline.Viscous crude oils may be transported by this method.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: June 19, 1990
    Assignees: The British Petroleum Company p.l.c., Intevep S.A.
    Inventors: Maria L. Chirinos, Alistair S. Taylor, Spencer E. Taylor
  • Method of desalting crude oil
    Patent number: 4895641
    Abstract: The salt content of a heavy crude oil is reduced by a method which comprises the steps of(a) mixing 70 to 98% by volume of a heavy crude oil having a viscosity in the range 200 to 250,000 mPa.s at the mixing temperature with 30 to 2% by volume of an aqueous solution of an emulsifying surfactant or an alkali, percentages being expressed as percentages by volume of the total mixture; mixing being effected under low shear conditions in the range 10 to 1,000 reciprocal seconds, in such manner that an HIPR emulsion is formed comprising distorted oil droplets having mean droplet diameters in the range 2 to 50 micron separated by aqueous films,(b) breaking the resulting emulsion, and(c) separating the resulting mixture into a layer of relatively salt-free oil and a layer of relatively salt-enhanced water.Heavy crude oils are desalted by the above method without requiring a hydrocarbon diluent.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: January 23, 1990
    Inventors: Maria I. Briceno, Maria L. Chirinos, Alistair S. Taylor, Spencer E. Taylor
  • Recovery of heavy oil
    Patent number: 4822481
    Abstract: Heavy crude oil is recovered from tar sand by treating the tar sand with a low concentration emulsion of a solvent in water containing 0.5 to 15% by volume of the solvent. Suitable solvents include hydrocarbons and halogenated hydrocarbons. Solvent-in-water emulsions are efficient in extracting bitumen with the major advantage of greatly reduced solvent: tar sand ratios.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: April 18, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Alistair S. Taylor