Inventor
HASENZAHL STEFFEN
DE24 patents
⚠️ This page may combine multiple inventors who share the name “HASENZAHL STEFFEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DEGUSSA
18 patentsUS6773814B2Aug 10, 2004
Metal oxide particles coated with silicon dioxide
DEGUSSA71 citations97
US5919430AJul 6, 1999
Preparation of crystalline microporous and mesoporous metal silicates, products produced thereby and use thereof
DEGUSSA67 citations96
US7083769B2Aug 1, 2006
Silicon-titanium mixed oxide powder prepared by flame hydrolysis, which is surface-enriched with silicon dioxide, and the preparation and the use thereof
DEGUSSA53 citations94
US6106803AAug 22, 2000
Granulates which contain titanium silicalite-1
DEGUSSA97 citations94
US7244302B2Jul 17, 2007
Titanium dioxide coated with silicon dioxide
DEGUSSA49 citations92
US6054112AApr 25, 2000
Process for the preparation of titanium containing molecular sieves
DEGUSSA25 citations92
US7470423B2Dec 30, 2008
Aqueous dispersion containing pyrogenically prepared metal oxide particles and dispersants
DEGUSSA33 citations91
US7255735B2Aug 14, 2007
Surface-modified silicon dioxide-titanium dioxide mixed oxides
DEGUSSA44 citations91
US6773697B2Aug 10, 2004
Iron oxide and silicon dioxide-titanium dioxide mixed oxide
DEGUSSA39 citations91
US6849570B2Feb 1, 2005
Process for the production of a titanium silicalite shaped body
DEGUSSA25 citations88
US6566555B2May 20, 2003
Process for preparing oximes
DEGUSSA14 citations83
US6710193B2Mar 23, 2004
Process for preparing crystalline microporous and mesoporous metal silicates, products obtainable by said process and their use
DEGUSSA12 citations73
US6103924AAug 15, 2000
Process for the preparation of 2,3,5-trimethylhydroquinone diesters
DEGUSSA7 citations71
US6841144B2Jan 11, 2005
Method for the production of a titanium-containing zeolite
DEGUSSA7 citations70
US6534068B2Mar 18, 2003
Iron oxide and silicon dioxide-titanium dioxide mixed oxide
DEGUSSA2 citations61
US6325946B1Dec 4, 2001
Process for treating waste water
DEGUSSA2 citations60
US6896859B2May 24, 2005
Method for the production of a titanium-containing zeolite
DEGUSSA0 citations52
US6323349B2Nov 27, 2001
Method of producing expoxides in the gaseous phase
DEGUSSA1 citations52
EVONIK DEGUSSA GMBH
3 patentsUS7815936B2Oct 19, 2010
Use of granular materials based on pyrogenically produced silicon dioxide in pharmaceutical compositions
EVONIK DEGUSSA GMBH110 citations95
US8012367B2Sep 6, 2011
Pulverulent materials
EVONIK DEGUSSA GMBH31 citations92
US8979996B2Mar 17, 2015
Composition containing quaternary amino-functional organosilicon compunds and production and use thereof
EVONIK DEGUSSA GMBH4 citations71