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:
Sep. 25, 2007
Filed:
Sep. 28, 2001
Tsutomu Sada, Otsu, JP;
Kazunari Takeda, Tsurugashima, JP;
Yumiko Takashima, Tano-gun, JP;
Naoto Nishimura, Kashihara, JP;
Takehito Mitate, Yamatotakada, JP;
Kazuo Yamada, Kitakatsuragi-gun, JP;
Motoaki Nishijima, Gose, JP;
Naoto Torata, Kashihara, JP;
Tsutomu Sada, Otsu, JP;
Kazunari Takeda, Tsurugashima, JP;
Yumiko Takashima, Tano-gun, JP;
Naoto Nishimura, Kashihara, JP;
Takehito Mitate, Yamatotakada, JP;
Kazuo Yamada, Kitakatsuragi-gun, JP;
Motoaki Nishijima, Gose, JP;
Naoto Torata, Kashihara, JP;
Sharp Corporation, Osaka, JP;
Abstract
A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60° C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.