The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2008
Filed:
Jan. 09, 2004
Armin Melzer, Dinslaken, DE;
Petra Merkel, Bad Harzburg, DE;
Jochen Spriestersbach, Duisburg, DE;
Rudi Kube, Bad Harzburg, DE;
Norbert Schulz, Bad Harzburg, DE;
Armin Melzer, Dinslaken, DE;
Petra Merkel, Bad Harzburg, DE;
Jochen Spriestersbach, Duisburg, DE;
Rudi Kube, Bad Harzburg, DE;
Norbert Schulz, Bad Harzburg, DE;
Grillo-Werke AG, Duisburg, DE;
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/cm, and the mean bulk density of the powder, measured according to ASTM B212, ranges from 1.8 to 4.0 g/cm. The invention is also directed to mixtures of said zinc powders or zinc alloy powders and to an alkaline battery including said powders.