Inventor

WILKER GERHARD

DE6 patents

⚠️ This page may combine multiple inventors who share the name “WILKER GERHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CLARIANT GMBH

3 patents

US6918958B2Jul 19, 2005

Acid pigment dispersants and pigment preparations

CLARIANT GMBH38 citations91

US6646126B2Nov 11, 2003

Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form

CLARIANT GMBH6 citations73

US6521756B2Feb 18, 2003

Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form

CLARIANT GMBH8 citations73

CLARIANT PRODUKTE DEUTSCHLAND

2 patents

US7311769B2Dec 25, 2007

Pigment compositions consisting of a yellow disazo pigment and an organic pigment

CLARIANT PRODUKTE DEUTSCHLAND14 citations83

US7341626B2Mar 11, 2008

Pigment compositions consisting of organic and inorganic pigments

CLARIANT PRODUKTE DEUTSCHLAND3 citations61

HOECHST AKTIENGESCELLSCHAFT

1 patent

US5614015AMar 25, 1997

Process for the preparation of 4,10-dibromoanthanthrone pigment

HOECHST AKTIENGESCELLSCHAFT4 citations56