Patents by Inventor David A. Pattillo

David A. Pattillo 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).

  • Elastic hollow particles for annular pressure buildup mitigation
    Patent number: 8080498
    Abstract: The concept involves placing within the annulus, hollow particles that possess material and geometric properties such that the hollow particles buckle at or near a defined pressure. Buckling of the particles increases the available volume within the annulus, thereby decreasing the annular pressure. The elastic hollow particles are designed such that they buckle in a sufficiently elastic manner to allow them to rebound towards their original shape as the pressure decreases. The rebounded particles then remain available to mitigate subsequent instances of APB.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: December 20, 2011
    Assignee: BP Corporation North America Inc.
    Inventors: James E. Shepherd, Joseph F. Rakow, Phillip David Pattillo, II
  • ELASTIC HOLLOW PARTICLES FOR ANNULAR PRESSURE BUILDUP MITIGATION
    Publication number: 20100113310
    Abstract: The concept involves placing within the annulus, hollow particles that possess material and geometric properties such that the hollow particles buckle at or near a defined pressure. Buckling of the particles increases the available volume within the annulus, thereby decreasing the annular pressure. The elastic hollow particles are designed such that they buckle in a sufficiently elastic manner to allow them to rebound towards their original shape as the pressure decreases. The rebounded particles then remain available to mitigate subsequent instances of APB.
    Type: Application
    Filed: October 15, 2009
    Publication date: May 6, 2010
    Applicant: BP CORPORATION NORTH AMERICA INC.
    Inventors: James E. Shepherd, Joseph F. Rakow, Phillip David Pattillo, II
  • System and method for foot measurement for athletic footwear
    Publication number: 20040260508
    Abstract: A method of recommending an appropriate size of athletic foot wear utilizing a gradiated pad. The method comprises: receiving a heel-to-toe length measurement into a computer, wherein the foot-to-toe length measurement is a first shoe size; receiving an arch length measurement into the computer, wherein the arch length measurement is a second shoe size; if the first shoe size is greater than the second shoe size, then using the computer to recommend an athletic foot wear size equal to first shoe size plus an additional one-half to full size; and if the first shoe size is less than the second shoe size, then using the computer to recommend an athletic foot wear size equal to the second shoe size plus an additional zero to one-half size.
    Type: Application
    Filed: May 19, 2004
    Publication date: December 23, 2004
    Inventors: David A. Pattillo, Benjamin L. Simon
  • System and method of dynamically assessing foot characteristics
    Publication number: 20040143452
    Abstract: A method for dynamically analyzing an individual's foot during a stride of the foot.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 22, 2004
    Applicant: Podo Technology, Inc.
    Inventors: David A. Pattillo, Benjamin L. Simon