Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2007-12-04
2007-12-04
Le, H. T (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C977S830000
Reexamination Certificate
active
11076128
ABSTRACT:
A surface treated particle comprising a plurality of inorganic, metallic, semi-metallic, and/or metallic oxide particles and a star-graft copolymer with looped and/or linear polymeric structure on a star-graft copolymer, obtainable by a heterogeneous polymerization reaction in the particle surface proximity, encapsulating at least a portion of said particles and a method for making the same. The surface treatment comprises: Si (w, x, y, z), where: w, x, y, and z are mole percent tetrafunctional, trifunctional, difunctional, and monofunctional monomeric units, respectively. Product(s) per se, defined as surface treated ZnO and/or TiO2, and the use of the product(s) per se in personal care formulations are excluded.
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Le H. T
Nanophase Technologies Corporation
Wildman Harrold Allen & Dixon LLP
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