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:
Nov. 27, 2001
Filed:
Jul. 21, 1999
Masaki Kasashima, Fukui-ken, JP;
Hiroto Sugahara, Fukui-ken, JP;
Shin-Etsu Chemical Co., Ltd., , JP;
Abstract
Provided is an AB,type hydrogen absorbing alloy powder obtained by quenching a melt of a hydrogen absorbing alloy rapidly and subjecting the resulting hydrogen absorbing alloy to fracturing by absorbing hydrogen, wherein the particle size distribution of the hydrogen absorbing alloy powder is such that, when the frequencies of detection of various particle diameters are cumulatively added from smaller-diameter to larger-diameter particles, and the particle diameters corresponding to 10%, 50% and 90% of all particles are represented by D,, D,and D,, respectively, the values of D,, D,and D,fall within the respective ranges defined by 4 &mgr;m≦D,≦14 &mgr;m, 17 &mgr;m≦D,≦37 &mgr;m, and 40 &mgr;m≦D,≦70 &mgr;m.