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:
Apr. 07, 2009
Filed:
Dec. 15, 2004
Koichi Morikawa, Kyoto, JP;
Masashige Ashizaki, Osaka, JP;
Eri Hirose, Kyoto, JP;
Yutaka Kobayashi, Kanagawa, JP;
Koichi Morikawa, Kyoto, JP;
Masashige Ashizaki, Osaka, JP;
Eri Hirose, Kyoto, JP;
Yutaka Kobayashi, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Nippon Yakin Kogyo Co., Ltd., Tokyo, JP;
Abstract
There is provided a casing material for a storage cell having sufficient corrosion resistance and strength even under a charging environment of a high voltage exceeding 2.8 V. This casing material for the storage cell comprises C: not more than 0.03 mass %, Si: 0.01-0.50 mass %, Mn: not more than 0.20 mass %, P: not more than 0.04 mass %, S: not more than 0.0010 mass %, Ni: 20.0-40.0 mass %, Cr: 20.0-30.0 mass %, Mo: 5.0-10.0 mass %, Al: 0.001-0.10 mass %, N: 0.10-0.50 mass %, Ca: not more than 0.001 mass %, Mg: 0.0001-0.0050 mass %, 0: not more than 0.005 mass %, provided that contents of Cr, Mo and N satisfy Cr+3.3×Mo+20×N≧43, and the balance being substantially Fe and inevitable impurities, in which a content of CaO as an oxide inclusion in steel is not more than 20 mass %.