Patent · US Expired

Process for determining the thickening effect of silicon dioxide

US5736407A · kind A · utility

1Cited by

4References

9Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Thomas Henning · Gelnhausen, DE
Guenther Michael · Karlstein, DE
Guenter Stadtmueller · Alzenau, DE

Key dates

Filing date	Jan 8, 1997
Grant date	Apr 7, 1998
Priority date	—
Expiry date	Jan 8, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/532
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The thickening effect of flame hydrolysis produced silicon dioxide is determined by making a dispersion of the flame hydrolysis produced silicon dioxide in a liquid such as water or ethanol and measuring the turbidity of this dispersion.

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