Patent · US Expired

Process for covering silicas with wax

US6921781B2 · kind B2 · utility

2Cited by

1References

32Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Juergen Schubert · Meckenheim, DE
Klaus-Dieter Hellwig · Bad Honnef, DE
Michael B. Pickel · Dearborn, US
Hans-Dieter Puetz · Bergheim, DE

Key dates

Filing date	Aug 23, 2001
Grant date	Jul 26, 2005
Priority date	—
Expiry date	Jun 24, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/12
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention provides a process, which includes:

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