Patent · US Expired

Silica by precipitation at constant alkali number, and its use

US7871588B2 · kind B2 · utility

16Cited by

5References

19Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Gottlieb-Georg Lindner · Wesseling, DE
Robert Kuhlmann · Lechenich, DE
Claus-Peter Drexel · Neu-Isenburg, DE

Key dates

Filing date	Feb 22, 2002
Grant date	Jan 18, 2011
Priority date	—
Expiry date	Aug 13, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/90
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.

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