Chemistry of inorganic compounds – Rare earth compound
Reexamination Certificate
2006-09-12
2006-09-12
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Rare earth compound
C423S593100, C423S599000, C423S594160, C423S021100, C423S049000, C423S155000
Reexamination Certificate
active
07105138
ABSTRACT:
The present invention relates to the macroporous manganese oxide material having ferromagnetic property and a method of preparing the same, more particularly to the macroporous ferromagnetic manganese oxide having three-dimensionally ordered nanopores, which is prepared by aligning colloidal polymer particles with an average diameter of a few hundred nanometers in 3D, infiltrating a solution of the precursor compound capable of forming manganese oxide represented by the following Chemical Formula 1 into interstices of the colloidal template and heating in an oxygen atmosphere to decompose and remove the polymer template, and a method for preparing the same:in-line-formulae description="In-line Formulae" end="lead"?La1-xCax-ySryMnO3 (1)in-line-formulae description="In-line Formulae" end="tail"?wherein 0.25<x<0.35 and 0<y≦0.35.
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patent: 2004/0247511 (2004-12-01), Mafune et al.
patent: 2005/0266297 (2005-12-01), Irvine et al.
patent: 2006/0018815 (2006-01-01), Suda
patent: 2006/0045840 (2006-03-01), Chen et al.
Eun Ok Chi, Young Nam Kim, Jin Chul Kim and Nam Hwi Hur, “A Macroporous Perovskite Manganite from Colloidal Templates with a Curie Temperature of 320 K,” Che\mical of Material, vol. 15, No. 10, May 20, 2003, pp. 1929-1931.
Chi Eun Ok
Hur Nam Hwi
Kim Jin Cheol
Kim Young Nam
Lee Eun Kwang
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Korea Research Institute of Standards and Science
Silverman Stanley S.
Vanoy Timothy C.
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