Patents by Inventor Roy Nordstrom

Roy Nordstrom 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 and apparatus for nuclear logging using lithium detector assemblies and gamma ray stripping means
    Patent number: 5278758
    Abstract: A method and apparatus for nuclear logging, and in particular, neutron porosity logging is presented. In accordance with the present invention, a pair of spaced lithium detectors, preferably Li.sup.6 I crystal or Li.sup.6 doped glass are used to detect neutrons emitted from a borehole formation being logged. In addition, novel data processing is used to strip the gamma-ray peak from the spectrum developed by the lithium detectors.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: January 11, 1994
    Assignee: Baker Hughes Incorporated
    Inventors: Carl A. Perry, Guy A. Daigle, William Bruck, Roy Nordstrom, Steven Rountree, Joseph Dudek, Jr., James Tsang, Leonard Goldman
  • Nuclear logging tool electronics including programmable gain amplifier and peak detection circuits
    Patent number: 5083124
    Abstract: A method and apparatus for nuclear logging, and in particular, neutron porosity logging is presented. In accordance with the present invention, a novel programmable gain amplifier circuit and a novel peak detector circuit are used in conjunction with other electronic circuitry to provide borehole formation logs in a nuclear logging tool.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: January 21, 1992
    Assignee: Teleco Oilfield Services Inc.
    Inventor: Roy Nordstrom
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    Patent number: D780803
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: March 7, 2017
    Assignee: Orange Research, Inc.
    Inventors: James Gill, Roy Nordstrom