US Patent No: 5,620,812

Number of patents in Portfolio can not be more than 2000

Non-aqueous electrolyte secondary battery

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Importance

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Abstract

A non-aqueous electrolyte secondary battery comprises a negative electrode having an active material comprised of lithium or a material capable of absorbing and releasing lithium, a lithium ion conductive non-aqueous electrolyte, and a positive electrode. The positive electrode active material is comprised of a composite represented by composition formula Li.sub.a R.sub.b L.sub.c M.sub.d O.sub.2 where R is one or more metalloid elements selected from boron B and silicon Si, L is at least one element selected from metals and metalloids of Groups IIIA and IVA of the periodic table, alkaline earth metals, and metals selected from the group consisting of Ti, Mn, Cu and Zn, M represents transition metal elements comprising at least Ni and Co, R, L and M are different, and a, b, c and d satisfy 0

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEIKO INSTRUMENTS INC.CHIBA2069

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Hideki Aichi, JP 28 217
Iwasaki, Fumiharu Chiba, JP 47 188
Sakai, Tsugio Sendai, JP 33 338
Sakata, Akifumi Chiba, JP 13 135
Tahara, Kensuke Miyagi, JP 17 254
Takasugi, Shinichi Chiba, JP 11 137
Yahagi, Seiji Chiba, JP 5 117

Cited Art

Patent Info (Count) # Cites Year
 
HER MAJESTY THE QUEEN IN RIGHT OF THE PROVINCE OF BRITISH COLUMBIA (1)
5,264,201 Lithiated nickel dioxide and secondary cells prepared therefrom 129 1990
 
NBT GMBH (1)
5,169,736 Electrochemical secondary element 84 1991
 
SEIKO INSTRUMENTS INC. (1)
5,286,582 Monaqueous electrolyte secondary battery and process for producing positive active materials 57 1991
 
SONY CORPORATION (1)
5,427,875 Non-aqueous electrolyte secondary cell 39 1992
 
UBE INDUSTRIES, LTD. (1)
5,478,674 Nonaqueous electrolyte-secondary battery 68 1994

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
UMICORE (7)
6,277,521 Lithium metal oxide containing multiple dopants and method of preparing same 25 1998
6,361,756 Doped lithium manganese oxide compounds and methods of preparing same 13 1999
6,582,852 Metal oxide containing multiple dopants and method of preparing same 26 2000
6,620,400 Method of producing layered lithium metal oxides free of localized cubic spinel-like structural phases 8 2001
6,589,499 Layered lithium cobalt oxides free of localized cubic spinel-like structural phases and method of making same 9 2001
6,794,085 Metal oxide containing multiple dopants and method of preparing same 4 2002
7,074,382 Layered lithium metal oxides free of localized cubic spinel-like structural phases and methods of making same 1 2002
 
FMC CORPORATION (5)
6,267,943 Lithium manganese oxide spinel compound and method of preparing same 20 1999
6,579,475 Lithium cobalt oxides and methods of making same 11 2000
6,517,803 Highly crystalline Mn2O3 or Mn3O4 manganese oxides 1 2001
6,423,294 Lithium manganese oxide spinel compound and method of preparing same 5 2001
6,932,922 Lithium cobalt oxides and methods of making same 5 2003
 
SANYO ELECTRIC CO., LTD. (3)
6,040,090 Positive electrode material for use in non-aqueous electrolyte battery, process for preparing the same, and non-aqueous electrolyte battery 25 1998
6,436,577 Non-aqueous electrolytic secondary cell 21 1999
6,551,743 Nonaqueous secondary battery 7 2000
 
SUMITOMO CHEMICAL COMPANY, LIMITED (3)
7,429,435 Method for preparing positive electrode active material for non-aqueous secondary battery 0 2003
7,709,150 Method for preparing positive electrode active material for non-aqueous secondary battery 0 2008
RE43913 Method for preparing positive electrode active material for non-aqueous secondary battery 0 2012
 
GEN 3 PARTNERS, INC. (2)
7,382,603 Electrode for energy storage devices and electrochemical supercapacitor based on said electrode 0 2006
7,888,229 Method for manufacturing an energy storage device 0 2007
 
ASAHI KASEI EMD CORPORATION (1)
6,287,720 Nonaqueous battery having porous separator and production method thereof 53 1997
 
CANON KABUSHIKI KAISHA (1)
7,378,189 Electrode material for lithium secondary battery, electrode structure employing electrode material, and lithium secondary battery having electrode structure 2 2004
 
ENERCERAMIC INC. (1)
7,674,557 Electrode active materials for lithium secondary batteries, method for preparing the same, and lithium secondary batteries using the same 2 2002
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
7,026,071 Non-crosslinked, amorphous, block copolymer electrolyte for batteries 18 2001
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
6,576,366 Non-aqueous electrolyte secondary cell, and material for negative electrode used therefor 4 2000
 
NEC CORPORATION (1)
6,436,574 Nonaqueous electrolyte secondary battery 4 2000
 
NISSHINBO INDUSTRIES, INC. (1)
6,491,784 Dry etching device 7 2001
 
SONY CORPORATION (1)
5,989,744 Non-aqueous electrolyte secondary cell 3 1997
 
TDK CORPORATION (1)
6,361,822 Method of producing an electrode for non-aqueous electrolyte battery 3 1999
 
THE GILLETTE COMPANY (1)
6,045,950 Solvent for electrolytic solutions 10 1998