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:
Oct. 26, 2021
Filed:
Apr. 27, 2018
Nippon Sheet Glass Company, Limited, Tokyo, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
[Problem] A separator for a lead acid storage battery that is prevented from suffering the puncture of a separator formed of a microporous film is to be provided. [Solution] The separator includes: a microporous film having a thickness of from 0.1 to 0.3 mm as a base portion; plural main ribsthat are provided on one surfaceof the base portion; and plural miniature ribsthat have a lower height than a height of the main ribsand are provided on the other surfaceof the base portion, and the plural miniature ribsare provided in a linear form with an inter-rib distance P, which is a distance between facing surfaces of the adjacent miniature ribs, of less than 1.9 mm.