Patent · US Expired

Method of producing separator materials

US6488982B1 · kind B1 · utility

1Cited by

6References

8Claims

0Family size

Assignee

Accumulatorenwerke Hoppecke Carl Zoellner & Sohn GmbH & Co. KG · DE

Inventors

Werner Nitsche · Lippstadt, DE
Norbert Lahme
Gunter Sassmannshausen · Brilon, DE

Key dates

Filing date	Apr 24, 2000
Grant date	Dec 3, 2002
Priority date	—
Expiry date	Apr 24, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for reducing ion concentrations in separator materials used in electrochemical processes, including in lead storage batteries. The separator material is treated with at least one acid from the group of sulphuric acid, phosphoric acid and sulfonic acids and/or at least one salt from the group of sulfates, phosphates and diphosphates of the alkali metals of alkaline earth metals.

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