Colloid systems and wetting agents; subcombinations thereof; pro – Continuous liquid or supercritical phase: colloid systems;... – Aqueous continuous liquid phase and discontinuous phase...
Reexamination Certificate
2005-06-14
2005-06-14
Barry, Chester T. (Department: 1724)
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous liquid or supercritical phase: colloid systems;...
Aqueous continuous liquid phase and discontinuous phase...
C210S687000
Reexamination Certificate
active
06906109
ABSTRACT:
A system and method are disclosed for producing uniform size silica particles by the steps of providing preformed colloidal silica particles having a surface area, adding an alkali metal silicate and a cation exchange resin to produce a quantity of feed silica at a feed rate which is less than a nucleation rate, and increasing the feed rate as the feed silica is added wherein the feed rate is less than the nucleation rate.
REFERENCES:
patent: 3789009 (1974-01-01), Irani
patent: 5788454 (1998-08-01), Thompson et al.
patent: 6747065 (2004-06-01), Paszkowski
patent: 1119022 (2001-07-01), None
patent: 1119022 (2001-07-01), None
patent: 690480 (2002-03-01), None
Barry Chester T.
Chemical Products Corp.
Deveau Todd
Thomas Kayden Horstemeyer & Risley LLP
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