Patent · US Expired

Precipitated silicas

US7071257B2 · kind B2 · utility

5Cited by

9References

3Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Heinz Esch · Wesseling, DE
Udo Gorl · Meckenheim, DE
Robert Kuhlmann · Lechenich, DE
Ralf Rausch · Alzenau, DE

Key dates

Filing date	Nov 8, 2001
Grant date	Jul 4, 2006
Priority date	—
Expiry date	Feb 20, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/19
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Rubber compositions comprising a precipitated silica with the following physico-chemical properties:

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