1
Tokuichi Hazama: Hydrogen absorbing electrode for use in nickel-metal hydride secondary batteries. Japan Storage Battery Company, Sughrue Mion Zinn Macpeak & Seas, February 8, 1994: US05284619 (7 worldwide citation)

A mixture of rare earth elements, in which La is comprised from 75 to 90 wt % of rare earth elements, with the balance being Ce, Nd, Pr and other rare earth elements (the mixture being referred to as a highly lanthanum-rich misch metal, and is hereinafter designated Lm), is used to produce a hydroge ...


2
Hazama Tokuichi Japan Storage: Hydrogen absorbing electrode for use in nickel-metal hydride secondary batteries.. Japan Storage Battery, October 16, 1991: EP0451575-A1 (6 worldwide citation)

A mixture of rare earth elements, in which La is comprised from 75 to 90 wt% of rare earth elements, with the balance being Ce, Nd, Pr and other rare earth elements (the mixture being referred to as a highly lanthanum-rich misch metal, and is hereinafter designated Lm), is used to produce a hydrogen ...