The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2000
Filed:
Sep. 30, 1997
Applicant:
Inventors:
Takehito Mitate, Yamatotakada, JP;
Naoto Torata, Kitakatsuragi-gun, JP;
Kazuaki Minato, Osaka, JP;
Toyoshi Iida, Fukui, JP;
Tetsushi Makino, Fukui, JP;
Shigeyuki Hamano, Fukui, JP;
Naoyoshi Kameda, Fukui, JP;
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
Tanaka Chemical Corporation, Fukui, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
4292311 ; 429223 ; 423594 ;
Abstract
A process of preparing lithium nickel oxide as a positive electrode active material comprising: dissolving a water-soluble lithium compound and a water-soluble nickel compound in water to prepare a homogeneous aqueous solution; co-precipitating, from the aqueous solution, a lithium salt and a nickel salt which are slightly soluble in water; isolating the resulting co-precipitate and calcining the co-precipitate to obtain lithium nickel oxide.