Patent · US Expired

Inhomogeneous silicas as carrier material

US6960251B2 · kind B2 · utility

7Cited by

3References

23Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Stefan Uhrlandt · Niederkassel, DE
Ralf Schmoll · Gerolzhofen, DE
Claus-Peter Drexel · Neu-Isenburg, DE

Key dates

Filing date	Mar 18, 2002
Grant date	Nov 1, 2005
Priority date	—
Expiry date	Jan 25, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/014
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A silica comprising at least two silica fractions, wherein said at least two silica fractions differ by at least 10% in at least one value for BET surface area, CTAB surface area and DBP absorption, the ranges of these three physicochemical properties being as follows:

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