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. 09, 2002
Filed:
Jul. 13, 2000
Takao Omae, Kyoto, JP;
Shigeharu Osumi, Kyoto, JP;
Kenji Yamanaka, Kyoto, JP;
Masahiko Kosai, Kyoto, JP;
Japan Storage Battery Co., Ltd., Kyoto, JP;
Abstract
A method for producing a grid for a lead storage battery has a first step, a second step and a cooling step performed between the first and second step. In the first step, lead alloy is sequentially rolled over a plurality of rolls. In the second step, the rolled sheet obtained at the first step is machined to produce a grid for a lead storage battery. In the cooling step, the rolled sheet is cooled so that (1) the surface temperature thereof is 10° C. or lower at least once and (2) the total time during which the rolled sheet is exposed to an atmosphere of higher than 10° C. is 10 hours or less.