Holger Friedrich

Person

Krefeld, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Pigment/auxiliary combination having improved colour properties
- Patent number 8,414,698
- Issue date Apr 9, 2013
- LANXESS Deutschland GmbH
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Black pigment/auxiliary combination having improved colour strength
- Patent number 7,931,745
- Issue date Apr 26, 2011
- LANXESS Deutschland GmbH
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for the preparation of pigment granules and the use thereof
- Patent number 7,837,785
- Issue date Nov 23, 2010
- LANXESS Deutschland GmbH
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Oxidation-stable iron oxide pigments, process for preparing them an...
- Patent number 7,410,536
- Issue date Aug 12, 2008
- LANXESS Deutschland GmbH
- Holger Friedrich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Oxidation-stable iron oxide pigments, process for preparing them an...
- Patent number 7,387,672
- Issue date Jun 17, 2008
- LANXESS Deutschland GmbH
- Holger Friedrich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing yellow iron oxide pigments with CaCo3 precipi...
- Patent number 7,144,455
- Issue date Dec 5, 2006
- Bayer Chemicals AG
- Ulrich Meisen
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR REDUCING HEXAVALENT CHROMIUM IN OXIDIC SOLIDS
- Publication number 20180282176
- Publication date Oct 4, 2018
- LANXESS Deutschland GmbH
- Rainer ORTMANN
- C01 - INORGANIC CHEMISTRY
Information Patent Application
BLACK PIGMENT/AUXILIARY COMBINATION HAVING IMPROVED COLOUR STRENGTH
- Publication number 20090064904
- Publication date Mar 12, 2009
- Lanxess Deutschland GmbH
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Pigment preparations of pasty or gellike consistency
- Publication number 20080289538
- Publication date Nov 27, 2008
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Oxidation-stable iron oxide pigments, process for preparing them an...
- Publication number 20070266899
- Publication date Nov 22, 2007
- LANXESS Deutschland GmbH
- Holger Friedrich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Oxidation-stable iron oxide pigments, process for preparing them an...
- Publication number 20070266900
- Publication date Nov 22, 2007
- LANXESS Deutschland GmbH
- Holger Friedrich
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Pigment/auxiliary combination having improved colour properties
- Publication number 20070022914
- Publication date Feb 1, 2007
- LANXESS Deutschland GmbH
- Holger Friedrich
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Process for preparing yellow iron oxide pigments with CaCO3 precipi...
- Publication number 20050045066
- Publication date Mar 3, 2005
- Ulrich Meisen
- C01 - INORGANIC CHEMISTRY

Holger Friedrich

Person

Patents Grantslast 30 patents

Pigment/auxiliary combination having improved colour properties

Black pigment/auxiliary combination having improved colour strength

Process for the preparation of pigment granules and the use thereof

Oxidation-stable iron oxide pigments, process for preparing them an...

Oxidation-stable iron oxide pigments, process for preparing them an...

Process for preparing yellow iron oxide pigments with CaCo3 precipi...

Patents Applicationslast 30 patents

METHOD FOR REDUCING HEXAVALENT CHROMIUM IN OXIDIC SOLIDS

BLACK PIGMENT/AUXILIARY COMBINATION HAVING IMPROVED COLOUR STRENGTH

Pigment preparations of pasty or gellike consistency

Oxidation-stable iron oxide pigments, process for preparing them an...

Oxidation-stable iron oxide pigments, process for preparing them an...

Pigment/auxiliary combination having improved colour properties

Process for preparing yellow iron oxide pigments with CaCO3 precipi...