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. 11, 1994
Filed:
Jan. 22, 1993
Hiroaki Ono, Ibaraki, JP;
Shuichi Wada, Osaka, JP;
Masayuki Hirota, Osaka, JP;
Hiroshi Fukunaga, Osaka, JP;
Hitachi Maxell, Ltd., Ibaraki, JP;
Abstract
A hydrogen storage alloy of Ni, Zr, Mn, Ti and at least one other element and at least two phases including a phase which contains at least one kind of Laves structure intermetallic compound, in which when atomic ratios of Ni, Zr, Mn and Ti are 'a', 'b', 'c' and 'd', respectively, 'a' is larger than 'b', 'b' is larger than 'c', 'c' is larger than 'd', and 'd' is larger than the atomic ratio of at least one other element, and a ratio b/a is larger than 5/8, a ratio c/a is smaller than 11/20 and a ratio d/a is smaller than 2/5, which alloy is useful as an active material of a negative electrode of a hydrogen storage alloy cell.