Inventor
UNVERDORBEN LEONHARD
DE15 patents
⚠️ This page may combine multiple inventors who share the name “UNVERDORBEN LEONHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLARIANT GMBH
6 patentsUS6537364B2Mar 25, 2003
Process for fine division of organic pigments by precipitation
CLARIANT GMBH82 citations96
US6582508B2Jun 24, 2003
Process for fine division of organic pigments
CLARIANT GMBH24 citations92
US6548647B2Apr 15, 2003
Process for preparing azo colorants
CLARIANT GMBH43 citations90
US6358308B2Mar 19, 2002
Finishing treatment of pigments in liquid or supercritical CO2
CLARIANT GMBH3 citations61
US5902884AMay 11, 1999
Process for preparing N-alkylcarbazoles
CLARIANT GMBH5 citations61
US6436182B1Aug 20, 2002
Process for producing highly concentrated pigment presscakes
CLARIANT GMBH4 citations57
CLARIANT FINANCE BVI LTD
5 patentsUS7135266B2Nov 14, 2006
Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias
CLARIANT FINANCE BVI LTD16 citations92
US6469147B2Oct 22, 2002
Preparation of azo colorants in microreactors
CLARIANT FINANCE BVI LTD40 citations91
US7309389B2Dec 18, 2007
Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias
CLARIANT FINANCE BVI LTD9 citations73
US7892345B2Feb 22, 2011
Method for producing transparent Pigment Violet 23
CLARIANT FINANCE BVI LTD1 citations49
US6649758B2Nov 18, 2003
Preparation of trans-thiazineindigo pigments
CLARIANT FINANCE BVI LTD0 citations34
CLARIANT INT LTD
3 patentsUS6723138B2Apr 20, 2004
Preparation of diketopyrrolopyrrole pigments
CLARIANT INT LTD27 citations91
US6566519B2May 20, 2003
Preparation of diketopyrrolopyrrole pigments
CLARIANT INT LTD22 citations91
US6616859B1Sep 9, 2003
Preparation of alcoholic solutions of alkali metal alkoxides
CLARIANT INT LTD2 citations61