Patents by Inventor Junichi Maruta

Junichi Maruta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Nonaqueous-electrolyte battery
    Patent number: 6472100
    Abstract: In a nonaqueous-electrolyte battery, a positive active material contains oxyhydroxide of nickel and aluminum. The positive active material may further contain oxyhydroxide of cobalt.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: October 29, 2002
    Assignee: Japan Storage Battery Co., Ltd.
    Inventor: Junichi Maruta
  • Lithium battery and method of producing positive electrode active material therefor
    Patent number: 6335119
    Abstract: In a method of producing a positive active material for a lithium battery, a compound represented by the chemical formula HxLiyMO2 in a solution containing lithium ions is chemically oxidized, where 0≦x≦2, 0≦y≦2, 1<(x+y)≦2, and M is one or two kinds of transition metals selected from Co and Ni.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: January 1, 2002
    Assignee: Japan Storage Battery Co., Ltd.
    Inventor: Junichi Maruta
  • Process for producing nickel compound containing lithium
    Patent number: 6333126
    Abstract: In a process for producing a nickel compound containing lithium, a first substance comprising one selected from the group consisting of lithium and lithium compound and a second substance comprising at least one of nickel oxyhydroxide and a derivative thereof are reacted in an organic solvent.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: December 25, 2001
    Assignee: Japan Storage Battery Co., Ltd.
    Inventor: Junichi Maruta
  • PROCESS FOR PRODUCING NICKEL COMPOUND CONTAINING LITHIUM
    Publication number: 20010009742
    Abstract: In a process for producing a nickel compound containing lithium, a first substance comprising one selected from the group consisting of lithium and lithium compound and a second substance comprising at least one of nickel oxyhydroxide and a derivative thereof are reacted in an organic solvent.
    Type: Application
    Filed: June 11, 1999
    Publication date: July 26, 2001
    Inventor: JUNICHI MARUTA
  • Lithium battery
    Patent number: 6074784
    Abstract: A compound represented by chemical formula: H.sub.x Li.sub.y NiO.sub.2 (0<x.ltoreq.1; 0.ltoreq.y<1; and 0.25.ltoreq.(x+y).ltoreq.2) is used as a positive active material of a lithium battery. The average oxidation number of nickel of the compound varies within a range of from 2.0 to 3.75 with charges and discharges of the battery.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: June 13, 2000
    Assignee: Japan Storage Battery Co., Ltd.
    Inventor: Junichi Maruta