Patent · US Expired

Process for the purification of anhydrous hydrogen fluoride

US5164052A · kind A · utility

1Cited by

0References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Andreas Bulan · Langenfeld, DE
Michael Krancher · Leverkusen, DE

Key dates

Filing date	Sep 27, 1991
Grant date	Nov 17, 1992
Priority date	—
Expiry date	Sep 27, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B7/195
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Impure anhydrous hydrogen fluoride is purified by removing metallic and non-metallic impurities by electrolysis under conditions whereby no explosive gas mixture is formed in the electrolytic cell.

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