Patent · US Active

Process for purifying raw-material gases by fractionation

US9938147B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Alfred Soppe · Issum, DE
Juergen Bittner · Leverkusen, DE
Thorsten Leidig · Duisburg, DE
Friedhelm Steffens · Leverkusen, DE
Knud Werner · Krefeld, DE
Thomas Runowski · Hilden, DE

Key dates

Filing date	May 22, 2013
Grant date	Apr 10, 2018
Priority date	—
Expiry date	Dec 18, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B7/075
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a process for purifying raw-material gases by fractionation. In particular, the present invention relates to a process for cleansing chlorine gas of bromine.

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