Patents by Inventor John Duguid

John Duguid 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).

  • Patent number: 7921714
    Abstract: Methods and related systems are described for making measurements at multiple locations in an annular region of a cased sequestration well. A first tool module is positionable within the well and adapted to directly or indirectly measure changing pressure at a first location in the annular region of the well. A pressure change is induced at the first location in the annular region. A second tool module is positionable within the well and adapted to directly or indirectly measure changing pressure at a second location in the annular region. The measured pressure changes at the second location are in response to the induced pressure change at the first location.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: April 12, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Andrew John Duguid, Edward C. Boratko, Ahmad Latifzai
  • Publication number: 20090272530
    Abstract: Methods and related systems are described for making measurements at multiple locations in an annular region of a cased sequestration well. A first tool module is positionable within the well and adapted to directly or indirectly measure changing pressure at a first location in the annular region of the well. A pressure change is induced at the first location in the annular region. A second tool module is positionable within the well and adapted to directly or indirectly measure changing pressure at a second location in the annular region. The measured pressure changes at the second location are in response to the induced pressure change at the first location.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 5, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Andrew John Duguid, Edward C. Boratko, Ahmad Latifzai
  • Patent number: 5919643
    Abstract: Disclosed are methods and compositions for identifying, monitoring and treating premalignant and malignant conditions in a human subject. The present invention further discloses methods and compositions for determining cells undergoing apoptosis, and for increasing the efficacy of a cancer therapy. The methods involve the use of apurinic/apyrimidinic endonuclease (APE), independently, as a marker for (pre)malignant conditions and for apoptosis. Also described are polyclonal antibody preparations for use in methods for detecting APE and methods for modulating expression susceptibility of cells to apoptosis.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: July 6, 1999
    Assignee: Advanced Research & Technology Institute
    Inventors: Mark R. Kelley, John Duguid, John Eble