Patents by Inventor Darrell L. Kramer

Darrell L. Kramer 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).

  • Process for the production of chlorinated hydrocarbons
    Patent number: 11945761
    Abstract: A process of the type for producing 1,1,1,2,3-pentachloropropane by introducing 1,1,1,3-tetrachloropropane, chlorine, and Lewis acid catalyst, optionally in the presence of carbon tetrachloride, the improvement comprising introducing the Lewis acid as a slurry within a chlorinated hydrocarbon.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 2, 2024
    Assignee: OCCIDENTAL CHEMICAL CORPORATION
    Inventors: John L. Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Michael A. Garmon
  • Seismic semblance/discontinuity method
    Patent number: 6141622
    Abstract: A semblance attribute to more reliably detect a seismic discontinuity is provided. The semblance attribute of the center point of a seismic volume is calculated from 3D traces within a spatial and time window. The seismic attribute is dependent, at least in part, on the ratio of the square of the sum of the amplitudes of said traces within the window and the sum of the squared amplitudes of said seismic traces over within the window.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: October 31, 2000
    Assignee: Union Oil Company of California
    Inventors: David Keller, Darrell L. Kramer