Patents by Inventor Norimiki Sugiyama

Norimiki Sugiyama 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).

  • Cobalt oxide particles and process for producing the same, cathode active material for non-aqueous electrolyte secondary cell and process for producing the same, and non-aqueous electrolyte secondary cell
    Patent number: 7192539
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: March 20, 2007
    Assignee: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cobalt oxide particles and process for producing the same, cathode active material for non-aqueous electrolyte secondary cell and process for producing the same, and non-aqueous electrolyte secondary cell
    Patent number: 7112291
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: September 26, 2006
    Assignee: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cobalt oxide particles and process for producing the same, cathode active material for non-aqueous electrolyte secondary cell and process for producing the same, and non-aqueous electrolyte secondary cell
    Publication number: 20060138390
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 29, 2006
    Applicant: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • COBALT OXIDE PARTICLES AND PROCESS FOR PRODUCING THE SAME, CATHODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY CELL AND PROCESS FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL
    Patent number: 6998071
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: February 14, 2006
    Assignee: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cobalt oxide particles and process for producing the same, cathode active material for non-aqueous electrolyte secondary cell and process for producing the same, and non-aqueous electrolyte secondary cell
    Publication number: 20050142445
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Application
    Filed: March 2, 2005
    Publication date: June 30, 2005
    Applicant: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cathode active material for non-aqueous electrolyte secondary cell and process for producing the same
    Publication number: 20040208818
    Abstract: A cathode active material for a non-aqueous electrolyte secondary cell having a c-axis length of lattice constant of 14.080 to 14.160 Å, an average particle size of 0.1 to 5.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 21, 2004
    Applicant: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Mitsuaki Hatatani, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cathode active material for non-aqueous electrolyte secondary cell and process for producing the same
    Patent number: 6756154
    Abstract: A cathode active material for a non-aqueous electrolyte secondary cell having a c-axis length of lattice constant of 14.080 to 14.160 Å, an average particle size of 0.1 to 5.0 &mgr;m, and a composition represented by the formula: LiCo(1−x−y)MnxMgyO2 wherein x is a number of 0.008 to 0.18; and y is a number of 0 to 0.18. This cathode active material is capable of maintaining an initial discharge capacity required for secondary cells and showing improved charge/discharge cycle characteristics under high temperature conditions.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 29, 2004
    Assignee: Toda Kogyo Corporation
    Inventors: Hideaki Maeda, Shoichi Fujino, Mitsuaki Hatatani, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Cobalt-coated lithium manganese complex oxide and preparation process thereof
    Patent number: 6551571
    Abstract: A cobalt-coated lithium manganese complex oxide is disclosed. This provides a particularly high discharge capacity which is useful for the improvement of cycle characteristics of a secondary battery as an active material of a positive electrode for a secondary battery with a nonaqueous electrolyte.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: April 22, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Shoichi Fujino, Hiroshi Takahama, Mitsuaki Hatatani, Norimiki Sugiyama, Hideaki Sadamura
  • Cobalt oxide particles and process for producing the same, cathode active material for non-aqueous electrolyte secondary cell and process for producing the same, and non-aqueous electrolyte secondary cell
    Publication number: 20030049534
    Abstract: The present invention relates to cobalt oxide particles useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell which is capable of showing a stable crystal structure by insertion reaction therein, and producing a non-aqueous electrolyte secondary cell having a high safety and especially a high heat stability, a process for producing the cobalt oxide particles, a cathode active material for a non-aqueous electrolyte secondary cell using the cobalt oxide particles, a process for producing the cathode active material, and a non-aqueous electrolyte secondary cell using the cathode active material.
    Type: Application
    Filed: August 2, 2002
    Publication date: March 13, 2003
    Inventors: Hideaki Maeda, Shoichi Fujino, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura
  • Manganese oxide, lithium manganese complex oxide and cobalt-coated lithium manganese complex oxide, and preparation processes thereof
    Publication number: 20020197202
    Abstract: A manganese oxide which has a calcium or/and magnesium content of 0.01 to 2.50 mol % based on the moles of manganese, a lithuim manganese complex oxide using the manganese oxide, and a cobalt-coated lithuim manganese complex oxide are disclosed. These provide a particularly high discharge capacity and are useful for the improvement of cycle characteristics of a secondary battery as an active material of a positive electrode for a secondary battery with a nonaqueous electrolyte.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 26, 2002
    Applicant: TODA KOGYO CORPORATION
    Inventors: Shoichi Fujino, Hiroshi Takahama, Mitsuaki Hatatani, Norimiki Sugiyama, Hideaki Sadamura
  • Manganese oxide, lithium manganese complex oxide and cobalt-coated lithium manganese complex oxide, and preparation processes thereof
    Publication number: 20020177002
    Abstract: A manganese oxide which has a calcium or/and magnesium content of 0.01 to 2.50 mol % based on the moles of manganese, a lithuim manganese complex oxide using the manganese oxide, and a cobalt-coated lithuim manganese complex oxide are disclosed. These provide a particularly high discharge capacity and are useful for the improvement of cycle characteristics of a secondary battery as an active material of a positive electrode for a secondary battery with a nonaqueous electrolyte.
    Type: Application
    Filed: March 4, 2002
    Publication date: November 28, 2002
    Applicant: TODA KOGYO CORPORATION
    Inventors: Shoichi Fujino, Hiroshi Takahama, Mitsuaki Hatatani, Norimiki Sugiyama, Hideaki Sadamura
  • Manganese oxide, lithium manganese complex oxide and cobalt-coated lithium manganese complex oxide, and preparation processes thereof
    Patent number: 6428766
    Abstract: A manganese oxide which has a calcium or/and magnesium content of 0.01 to 2.50 mol % based on the moles of manganese, a lithium manganese complex oxide using the manganese oxide, and a cobalt-coated lithium manganese complex oxide are disclosed. These provide a particularly high discharge capacity and are useful for the improvement of cycle characteristics of a secondary battery as an active material of a positive electrode for a secondary battery with a nonaqueous electrolyte.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: August 6, 2002
    Assignee: Toda Kogyo Corporation
    Inventors: Shoichi Fujino, Hiroshi Takahama, Mitsuaki Hatatani, Norimiki Sugiyama, Hideaki Sadamura
  • Cathode active material for non-aqueous electrolyte secondary cell and process for producing the same
    Publication number: 20020098416
    Abstract: A cathode active material for a non-aqueous electrolyte secondary cell of the present invention, has a c-axis length of lattice constant of 14.080 to 14.160 Å, an average particle size of 0.1 to 5.
    Type: Application
    Filed: November 28, 2001
    Publication date: July 25, 2002
    Inventors: Hideaki Maeda, Shoichi Fujino, Mitsuaki Hatatani, Hiroyasu Watanabe, Norimiki Sugiyama, Hideaki Sadamura