Patents by Inventor Ralph Edmund Harris

Ralph Edmund Harris 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).

  • Method for treatment of underground reservoirs
    Patent number: 6763888
    Abstract: A method for treating an underground reservoir, which method comprises introducing into the reservoir a treatment fluid comprising, dissolved or dispersed in water, an ester and a polymer breaker, such that the ester hydrolyses to produce an organic acid to dissolve acid soluble material present within the reservoir and the polymer breaker degrades polymeric material present within the reservoir.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: July 20, 2004
    Assignee: Cleansorb Limited
    Inventors: Ralph Edmund Harris, Ian Donald McKay
  • Method for treatment of underground reservoirs
    Patent number: 6702023
    Abstract: A method for treating an underground reservoir, which method comprises introducing into the reservoir a treatment fluid comprising, dissolved or dispersed in water, an ester and a non-enzyme catalyst capable of increasing the rate of hydrolysis of the ester, such that the ester hydrolyses to produce an organic acid to dissolve acid soluble material present within the reservoir.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: March 9, 2004
    Assignee: Cleansorb Limited
    Inventors: Ralph Edmund Harris, Ian Donald McKay
  • Methods for deposition of materials in underground reservoirs
    Patent number: 6401819
    Abstract: A method of precipitating or depositing material within an underground reservoir which comprises introducing into the reservoir in aqueous solution (i) an isolated enzyme and (ii) a substrate for the enzyme, such that the action of the enzyme on the substrate leads to the precipitation or deposition of material within the underground reservoir.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: June 11, 2002
    Assignee: Cleansorb Limited
    Inventors: Ralph Edmund Harris, Ian Donald McKay