Patent · US Expired

Alkaline cell or battery

US7407728B2 · kind B2 · utility

13Cited by

5References

12Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Wolffried Wenneis · Mannheim, DE
Harald Hoffmann · Much, DE
Birgit Severich · Viernheim, DE
Hartwig Hocker · Eckersdorf, DE
Helmut Keul · Aachen, DE

Key dates

Filing date	Sep 6, 2002
Grant date	Aug 5, 2008
Priority date	—
Expiry date	Dec 10, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An alkaline cell or battery having at least one positive and one negative electrode which are separated by a separator and which are disposed, along with an alkaline electrolyte, in a housing, the separator being a non-woven fabric, a microporous foil, or a web made of one or a plurality of polymers, which are formed by copolymerization or grafting through reactive extrusion, and which have functional groups in the molecule or form them in the alkaline electrolyte, the functional groups being active as Lewis acids.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.