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:
Aug. 22, 1989
Filed:
May. 02, 1988
Tadayuki Ohmae, Chiba, JP;
Tadashi Sakurai, Chiba, JP;
Noboru Yamaguchi, Chiba, JP;
Mitsuyuki Okada, Chiba, JP;
Kouichiro Asao, Chiba, JP;
Sumitomo Chemical Co., Limited, Osaka, JP;
Abstract
A lead accumulator using dilute sulfuric acid as an electrolyte liquor is disclosed, in which the electrolyte liquor is fixed by absorption or impregnation into an ethylene copolymer resin or a molding thereof comprising from 40 to 90% by weight of an ethylene unit and from 10 to 60% by weight of at least one comonomer unit selected from (A) and ethylenically unsaturated comonomer unit having an amido group and an amino group in the molecule thereof and (B) an ethylenically unsaturated comonomer unit having an ester group and an amino group in the molecule thereof and having an average molecular weight of from 5,000 to 50,000. The lead accumulator can be produced easily and at a low cost without limitations of shape and volume and has high performance reliability.