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:
Jun. 12, 2001
Filed:
Jul. 06, 1998
Kazushige Kohno, Hitachi, JP;
Seizi Koike, Hitachi, JP;
Toshiya Doi, Hitachioota, JP;
Tomoichi Kamo, Ibaraki, JP;
Masaru Kadoshima, Hitachi, JP;
Kozo Sakamoto, Hitachi, JP;
Shigeoki Nishimura, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A sodium-sulfur battery in which sulfur and/or sodium polysulfide are used as cathode active materials, and an electronic conductor, which are arranged in a cathode chamber between a cathode container operating concurrently as a cathode electric collector and a solid electrolyte tube, and a layer, made of a material having a superior corrosion resistance against sulfur and sodium polysulfide, is provided between said solid electrolyte tube and said electronic conductor, wherein the cathode electric collector as the electronic conductor has been improved.