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. 20, 2005
Filed:
Dec. 26, 2001
Tomomichi Ueda, Osaka, JP;
Susumu Kitaoka, Hirakata, JP;
Katsuhiko Mori, Katano, JP;
Shoji Yamashita, Hirakata, JP;
Kazuyuki Higashi, Kadoma, JP;
Tadahiro Tokumoto, Hirakata, JP;
Masatoshi Hano, Katano, JP;
Tomomichi Ueda, Osaka, JP;
Susumu Kitaoka, Hirakata, JP;
Katsuhiko Mori, Katano, JP;
Shoji Yamashita, Hirakata, JP;
Kazuyuki Higashi, Kadoma, JP;
Tadahiro Tokumoto, Hirakata, JP;
Masatoshi Hano, Katano, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A prismatic battery case with high dimensional precision is manufactured, while pursuing an improvement in productivity, with a manufacturing method of a prismatic battery case that includes a first step for molding an intermediate cup body () by impact molding a pellet () of prescribed shape, and a second step for molding a prismatic battery case () with a cross section of substantially rectangular shape by DI processing the intermediate cup body (). The DI processing conducts drawing and ironing continuously, in one action.