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Multifunctional particulate material, fluid, and composition

  • US 7,560,160 B2
  • Filed: 11/25/2002
  • Issued: 07/14/2009
  • Est. Priority Date: 11/25/2002
  • Status: Active Grant
First Claim
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1. A particulate material, comprising:

  • a) a predetermined amount of core particles with one or more coatings;

    b) one of said one or more coatings comprising a permanent surfactant coating, wherein the core particles and/or at least one of said one or more coatings provides the particulate material with at least one property selected from the group consisting of magnetic, thermal, optical, electrical, biological, chemical, lubrication, rheological, and a combination thereof; and

    c) said core particles having an average particle size of about 1 nm to 500 μ

    m.

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