Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Reexamination Certificate
2006-01-19
2009-10-13
Langel, Wayne (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
C075S374000, C423S594190
Reexamination Certificate
active
07601199
ABSTRACT:
Glycerol is used as a solvent medium for the precipitation of a complex of nickel and glycerol material. The precipitate is separated from the liquid solvent and dried and calcined in air to produce small (nanometer size) particles characterized by a nickel core encased in a nickel oxide shell. The proportions of nickel core and nickel oxide shell can be controlled by management of the time and temperature of heating in air. Prolonged heating in air can produce nickel oxide particles, or calcining of the precipitate in nitrogen produces nickel particles.
REFERENCES:
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patent: 5512094 (1996-04-01), Linton
patent: 1381328 (2002-11-01), None
patent: 1415621 (2003-05-01), None
patent: 1631589 (2005-06-01), None
Korean Office Action; translation and original document.
Cai Mei
Li Yong
Rogers Jerry D.
Shen Wenjie
Dalian Institute of Chemical Physics, Chinese Academy of Science
Fiorito James
GM Global Technology Operations Inc.
Langel Wayne
Reising Ethington P.C.
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