Zinc powder or zinc alloy powder with inhomogeneous bulk...

Details Zinc powder or zinc alloy powder with inhomogeneous bulk... Zinc powder or zinc alloy powder with inhomogeneous bulk...

2008-01-29

2008-01-29

King, Roy (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

Reexamination Certificate

active

10754271

ABSTRACT:
The invention relates to zinc powders or zinc alloy powders with an inhomogeneous bulk density distribution depending on the particle size, wherein the difference of the bulk density measured according to ASTM B212 in the particle size range smaller than 75 μm and that in the particle size range greater than 150 μm is at least 0.5 g/cm3, and the mean bulk density of the powder, measured according to ASTM B212, ranges from 1.8 to 4.0 g/cm3. The invention is also directed to mixtures of said zinc powders or zinc alloy powders and to an alkaline battery including said powders.

REFERENCES:
patent: 6022639 (2000-02-01), Urry
patent: 2002/0150814 (2002-10-01), Causton et al.
patent: 2004/0115532 (2004-06-01), Malservisi et al.
patent: 53089811 (1978-08-01), None
patent: 2002270164 (2002-09-01), None
patent: WO 01/40529 (2001-06-01), None

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