Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2011-04-12
2011-04-12
Lorengo, Jerry (Department: 1731)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S001000
Reexamination Certificate
active
07922994
ABSTRACT:
A method for preparing metal oxide particles having a primary particle size on the order of nanometers is provided. The method comprises subjecting a metal ion present in an aqueous solution and an amino alcohol to an initial stage of reaction with each other at normal temperatures under normal pressures for a given time, and adding at least once either of a metal ion or an amino alcohol or both thereof to the resulting reaction system for carrying out a subsequent stage of reaction for a given time wherein total amounts of the metal ion and the amino alcohol are such that the amino alcohol is used in the range of not less than a molar equivalent to the metal ion.
REFERENCES:
patent: 2003/0183806 (2003-10-01), Lyons
patent: 2005/0279969 (2005-12-01), Comanzo et al.
patent: 2001-348223 (2001-12-01), None
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Office action dated Dec. 22, 2009 in corresponding Japanese Application No. 2007-331937.
Itoh Miho
Yotou Hiroaki
Denso Corporation
Harness & Dickey & Pierce P.L.C.
Lorengo Jerry
Wood Jared
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