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:
Mar. 27, 2001
Filed:
Sep. 16, 1998
Masayuki Fukagawa, Tokyo, JP;
Keiichi Iwamoto, Nagasaki, JP;
Nozomu Kawasetsu, Nagasaki, JP;
Katsuzou Sudou, Nagoya, JP;
Akihiro Sawata, Yokohama, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A sodium secondary battery which assures excellent sealing and can be manufactured in a simple manner is provided. The battery includes a negative electrode chamber defined by the inside of a bottom-closed, hollow cylindrical, solid electrolyte accommodated in an outer case and a positive electrode chamber formed outside the solid electrolyte and containing a porous electrode,impregnated with sulfur which serves as a positive electrode active substance. A cover, which closes the opening portion of the outer case, is fastened to the outer case by use of bolts and the interposition of an insulator.