Patent · US Expired

Surface-modified pyrogenically produced aluminum oxide

US5384194A · kind A · utility

11Cited by

8References

3Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Hans Deusser · Karlstein, DE
Dieter Kerner · Midland Park, US
Jurgen Meyer · Aschaffenburg, DE
Gunther Michael · Karlstein, DE
Andreas Stubbe · Rodenbach, DE

Key dates

Filing date	Jan 28, 1993
Grant date	Jan 24, 1995
Priority date	—
Expiry date	Jan 28, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31663
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Surface-modified, pyrogenically produced aluminum oxide which has the following physico-chemical properties: ______________________________________ Surface (m.sup.2 /g) 50 to 150 Stamping density (g/l) 50 to 90 Drying loss (%) <5 Annealing loss (%) 5.0 to 15 C content (%) 0.5 to 12 pH 4 to 8. ______________________________________

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