Patent · US Expired

Method for reducing metal ion content in a chemical compound with a dipole moment

US6432277B1 · kind B1 · utility

0Cited by

3References

13Claims

0Family size

Assignee

AlliedSignal, Inc. · US

Inventors

Wolfgang Sievert · Wunstorf, DE
Joachim Leifels · Gehrden, DE

Key dates

Filing date	Aug 15, 2000
Grant date	Aug 13, 2002
Priority date	—
Expiry date	Aug 15, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/30
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Process for reducing the metal ion content in a chemical compound having a dipole moment or a mixture of two or more thereof to 1 ppb or less by distillation with supply of the energy required for vaporizing the chemical compound or the mixture of two or more thereof in the form of electromagnetic waves having a frequency in the range from 1 MHz to 50 Ghz.

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