Patent · US Expired

Pulverulent materials

US8012367B2 · kind B2 · utility

16Cited by

7References

11Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Steffen Hasenzahl · Hanau, DE
Claus-Peter Drexel · Neu-Isenburg, DE
Jurgen Meyer · Aschaffenburg, DE

Key dates

Filing date	Oct 7, 2003
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Sep 9, 2025

Classification

Technology area (CPC A)Human Necessities
CPC primaryA62D1/0014
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Pulverulent materials which contain surface-modified and structure-modified pyrogenically prepared metalloid or metallic oxide for the purposes of improvement.

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