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:
Jul. 21, 1998
Filed:
Jul. 30, 1996
Tomohiro Inoue, Sagamihara, JP;
Toshiyuki Ohsawa, Kawasaki, JP;
Masahiro Taniuchi, Yokohama, JP;
Takayuki Kurohara, Osaka, JP;
Koji Miura, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Koei Chemical Company, Ltd., Osaka, JP;
Abstract
A secondary battery includes a positive electrode comprising a positive active material; an electrolyte layer including a gel polymer solid electrolyte; and a carbon-based negative electrode capable of occluding and releasing lithium, which contains a binder including a resin composition of a copolymer of (a) a vinyl pyridine compound of formula (1), ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, and R.sup.2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and (b) a hydroxyl-group-containing (meth)acrylate compound.