Patents Represented by Attorney McDermott Will & Emergy LLP

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  • Variable density treatment fluids
    Patent number: 8202824
    Abstract: The present invention provides variable density fluid compositions and methods for using such compositions in a subterranean formation. One exemplary embodiment of the variable density fluid compositions of the present invention comprises a variable density fluid comprising: a base fluid, and a portion of variable pressure weighting material particles.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 19, 2012
    Assignee: Halliburton Energy Services Inc.
    Inventors: B. Raghava Reddy, Krishna Ravi, Michael Szymanski, Dale Jamison, Donald Whitfill
  • Methods for surface modification of non-dispersible metal nanoparticles and modified metal nanoparticles for inkjet by the same method
    Patent number: 8173210
    Abstract: A method for surface modification of non-dispersible metal nanoparticles comprises mixing metal nanoparticles having an amorphous carbon layer on the surface with an alcohol or thiol solvent, mixing a capping molecule having a carboxylic head group in the mixed solution, and separating the metal nanoparticles from the mixed solution and the metal nanoparticles for inkjet printing thus modified.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: May 8, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: In-Keun Shim, Jae-Woo Joung, Kwi-Jong Lee