Patents by Inventor Noriko Anan

Noriko Anan 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).

  • Lithium-manganese oxide for use in lithium secondary cell cathode and method for producing the lithium-manganese oxide
    Patent number: 6713039
    Abstract: A lithium-manganese oxide for use in a lithium secondary cell cathode, having a spinel structure expressed by a chemical compositional formula of LixMn2O4-zFz (1.12≦X≦1.20, 0<Z<0.16) and having a lattice constant ranging from 8.220 to 8.230 Å, the lithium-manganese oxide including electrolytic or chemically synthesized manganese dioxide, lithium salt, and fluoride.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 30, 2004
    Assignee: Kyushu Ceramics Industry Co., Ltd.
    Inventors: Hiroyuki Tabata, Kazue Matsui, Noriko Anan
  • Lithium-manganese oxide for use in lithium secondary cell cathode and method for producing the lithium-manganese oxide
    Publication number: 20020044906
    Abstract: A lithium-manganese oxide for use in a lithium secondary cell cathode, having a spinel structure expressed by a chemical compositional formula of LixMn2O4-zFz (1.12≦X≦1.20, 0<Z<0.16) and having a lattice constant ranging from 8.220 to 8.230 Å, the lithium-manganese oxide including electrolytic or chemically synthesized manganese dioxide, lithium salt, and fluoride.
    Type: Application
    Filed: June 28, 2001
    Publication date: April 18, 2002
    Inventors: Hiroyuki Tabata, Kazue Matsui, Noriko Anan
  • Spinel compounds as cathodes for lithium materials
    Patent number: 6071646
    Abstract: The invention relates to a method of preparing spinel structure lithium manganese oxides as cathode for lithium batteries. The spinel compounds are obtained by the reacting of MnO.sub.2 with a particle size of less 10 .mu.m and Li.sub.2 CO.sub.3. The cell containing above cathode material provides improved capacity and good rechargeability. The method described in the present invention is much closer to industrial scale produce.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: June 6, 2000
    Assignee: Kyushu Ceramics Industry Co., Ltd.
    Inventors: Hideyuki Noguchi, Hiroyuki Tabata, Noriko Anan