Patents by Inventor James L. Farrell

James L. Farrell 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).

  • Kalman estimator tracking system
    Patent number: 4179696
    Abstract: A radar tracking system having a Kalman estimator is disclosed. The estimator is provided with angle and range track error measurements in a coordinate system that is aligned with and normal to the antenna line of sight, commonly referred to as the LOS coordinate system. This estimator implementation uses less computing resources in converting the measurements provided relative to the antenna LOS coordinate system, to predict target position referenced to a stable coordinate system such as geographic, wander azimuth, or inertial.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: December 18, 1979
    Assignee: Westinghouse Electric Corp.
    Inventors: Elmen C. Quesinberry, Michael Tom, James L. Farrell
  • Recovery system for oil shale deposits
    Patent number: 4065183
    Abstract: A process for the in-situ recovery of hydrocarbon, carbon monoxide, and hydrogen values and associated minerals from subsurface oil shale deposits is provided by forming a gas-tight retort chamber and injecting it with a hot, pressurized gas followed by a solvent extraction and finally a combustion of the hydrocarbon residue. In order to conduct the process, the shale formation must be beneath a gas impermeable geological structure which will form a gas-tight chamber upon leaching of the water soluble minerals.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: December 27, 1977
    Assignee: TRW Inc.
    Inventors: David A. Hill, Durk J. Pearson, Ethelyn P. Motley, Thomas N. Beard, James L. Farrell