Inventor · disambiguated record
Erwin Dietz
Also filed as: DIETZ ERWIN
68 granted patents·3 pending applications·1,503 citations·filing 1977–2004
99Inventor score
Files withHOECHST AG45CLARIANT GMBH17CLARIANT INT LTD3CLARIANT FINANCE BVI LTD2CASSELLA FARBWERKE MAINKUR AG1
Top patents by PatentIndex Score
71 records- 0198US5110931AProcess for the preparation of n,n'-dimethylperylene-3,4,9,10-tetracarboxylic diimide in high-hiding pigment formHOECHST AG·Filed 1989·Granted May 5, 1992·84 cites·11 claims
- 0297US5264034APigment preparations based on perylene compoundsHOECHST AG·Filed 1990·Granted Nov 23, 1993·101 cites·20 claims
- 0395US6537364B2Process for fine division of organic pigments by precipitationCLARIANT GMBH·Filed 2001·Granted Mar 25, 2003·82 cites·22 claims
- 0495US4156616APigment dispersion for use in hydrophilic and hydrophobic mediaHOECHST AG·Filed 1977·Granted May 29, 1979·100 cites·16 claims
- 0594US5466807APerylene compounds containing sulfonic acid groups process for preparing them and their useHOECHST AG·Filed 1990·Granted Nov 14, 1995·56 cites·15 claims
- 0694US5248774AInner salts based on ammonium and sulfonate groups of perylene-3,4,9,10-tetracarboxylic and derivatives thereofHOECHST AG·Filed 1992·Granted Sep 28, 1993·48 cites·10 claims
- 0792US6562121B2Conditioning of organic pigmentsCLARIANT FINANCE BVI LTD·Filed 2001·Granted May 13, 2003·48 cites·15 claims
- 0892US5264032APigment preparationsHOECHST AG·Filed 1992·Granted Nov 23, 1993·58 cites·20 claims
- 0991US6548647B2Process for preparing azo colorantsCLARIANT GMBH·Filed 2001·Granted Apr 15, 2003·43 cites·21 claims
- 1090US7102014B2Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparationsCLARIANT GMBH·Filed 2004·Granted Sep 5, 2006·21 cites·9 claims
- 1190US6918958B2Acid pigment dispersants and pigment preparationsCLARIANT GMBH·Filed 2002·Granted Jul 19, 2005·38 cites·18 claims
- 1289US5368641AModified 2,9-dimethylquinacridone pigments, process for their manufacture and a method for pigmenting or lacquer systems with these pigmentsHOECHST AG·Filed 1992·Granted Nov 29, 1994·33 cites·10 claims
- 1388US6835242B2Conditioning of organic pigmentsCLARIANT FINANCE BVI LTD·Filed 2003·Granted Dec 28, 2004·30 cites·2 claims
- 1488US5296034AProcess for the production of copper phthalocyanine pigment preparations of the α phaseHOECHST AG·Filed 1993·Granted Mar 22, 1994·28 cites·23 claims
- 1588US5137576AQuinacridones having selectively adjusted triboelectric effectsHOECHST AG·Filed 1989·Granted Aug 11, 1992·24 cites·11 claims
- 1688US4986852APigments and use thereofHOECHST AG·Filed 1988·Granted Jan 22, 1991·31 cites·5 claims
- 1787US6409816B1Pigment preparations based on diketopyrrolopyrrole pigments with basic perylene dispersantsCLARIANT GMBH·Filed 2000·Granted Jun 25, 2002·22 cites·16 claims
- 1887US5296033AProcess for the production of pigment preparations based on phythalocyanine pigmentsHOECHST AG·Filed 1993·Granted Mar 22, 1994·25 cites·28 claims
- 1986US7045637B2Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparationsCLARIANT GMBH·Filed 2003·Granted May 16, 2006·15 cites·9 claims
- 2085US7045638B2Pigment dispersants based on diketopyrrolopyrrole compounds and pigment preparationsCLARIANT GMBH·Filed 2003·Granted May 16, 2006·13 cites·5 claims
- 2185US6723138B2Preparation of diketopyrrolopyrrole pigmentsCLARIANT INT LTD·Filed 2003·Granted Apr 20, 2004·27 cites·13 claims
- 2283US6566519B2Preparation of diketopyrrolopyrrole pigmentsCLARIANT INT LTD·Filed 2001·Granted May 20, 2003·22 cites·12 claims
- 2383US5318627AProcess for the preparation of pigment preparations based on C.I. pigment violet 23HOECHST AG·Filed 1993·Granted Jun 7, 1994·38 cites·37 claims
- 2483US4217265APigment preparationsHOECHST AG·Filed 1978·Granted Aug 12, 1980·12 cites·23 claims
- 2582US5275653APigment preparations based on dioxazine compoundsHOECHST AG·Filed 1992·Granted Jan 4, 1994·19 cites·10 claims
- 2681US6221150B1Perylene compounds and pigment preparationsCLARIANT GMBH·Filed 1999·Granted Apr 24, 2001·20 cites·17 claims
- 2779US6582508B2Process for fine division of organic pigmentsCLARIANT GMBH·Filed 2001·Granted Jun 24, 2003·24 cites·18 claims
- 2879US5591258APreparation of linear, unsubstituted quinacridone pigments of the β-phaseHOECHST AG·Filed 1994·Granted Jan 7, 1997·14 cites·17 claims
- 2979US5071483AProcess for the preparation of pigment preparations of the anthanthrone seriesHOECHST AG·Filed 1989·Granted Dec 10, 1991·14 cites·11 claims
- 3078US5071482APigment preparationsHOECHST AG·Filed 1989·Granted Dec 10, 1991·13 cites·15 claims
- 3177US5342723ABiscationic acid amide and acid imide derivatives as charge controllersHOECHST AG·Filed 1990·Granted Aug 30, 1994·21 cites·10 claims
- 3275US7056378B2Method for producing vattable organic pigmentsCLARIANT GMBH·Filed 2003·Granted Jun 6, 2006·8 cites·11 claims
- 3375US6521756B2Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment formCLARIANT GMBH·Filed 2001·Granted Feb 18, 2003·8 cites·10 claims
- 3473US5662739AUse of fatty acid taurides for the dispersion of polycyclic pigmentsHOECHST AG·Filed 1995·Granted Sep 2, 1997·14 cites·13 claims
- 3573US4219365APigment dispersions and their use for the pigmenting of hydrophilic and hydrophobic mediaHOECHST AG·Filed 1978·Granted Aug 26, 1980·9 cites·14 claims
- 3672US5123966AMixed crystal pigments based on halogenated perylenetetracarboximidesHOECHST AG·Filed 1990·Granted Jun 23, 1992·11 cites·17 claims
- 3772US4881980APigments of the quinacridonequinone series, processes for their preparation and their useHOECHST AG·Filed 1987·Granted Nov 21, 1989·10 cites·12 claims
- 3871US5747175ALCP blendsFiled 1997·Granted May 5, 1998·29 cites·19 claims
- 3970US6646126B2Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment formCLARIANT GMBH·Filed 2002·Granted Nov 11, 2003·6 cites·7 claims
- 4070US5070159AAddition compounds, a process for the preparation, and their use, based on epoxy novolac-fatty amine adductsHOECHST AG·Filed 1989·Granted Dec 3, 1991·11 cites·15 claims
- 4168US5415669ADye mixtures for the dyeing of textile hydrophobic fibre materialsHOECHST MITSUBISHI KASEI·Filed 1993·Granted May 16, 1995·9 cites·22 claims
- 4268US4986851APigment dispersions, processes for their preparation and their useHOECHST AG·Filed 1989·Granted Jan 22, 1991·42 cites·14 claims
- 4367US5698705AIsoindoline pigmentsHOECHST AG·Filed 1995·Granted Dec 16, 1997·11 cites·11 claims
- 4467US5240499ASurfactant triazine compounds and their useHOECHST AG·Filed 1991·Granted Aug 31, 1993·12 cites·5 claims
- 4565US4785082AProcess for preparing a highly concentrated aqueous press cakes of an azo disperse dye from dilute aqueous suspension thereof wherein surfactant is added before the dye is isolatedHOECHST AG·Filed 1985·Granted Nov 15, 1988·7 cites·18 claims
- 4665US4443263ASolids dispersions which can be easily distributed in hydrophobic and hydrophilic media and are stable to flocculation, and their useHOECHST AG·Filed 1982·Granted Apr 17, 1984·19 cites·17 claims
- 4764US6413309B1Pigment preparations comprising two or more perylene compoundsCLARIANT GMBH·Filed 2000·Granted Jul 2, 2002·11 cites·20 claims
- 4864US5207829APigment preparationsHOECHST AG·Filed 1991·Granted May 4, 1993·8 cites·12 claims
- 4963US5837160AChiral CLCPs containing colored monomersHOECHST AG·Filed 1997·Granted Nov 17, 1998·21 cites·11 claims
- 5062US5112404APigment formulations, processes for their preparation and their useHOECHST AG·Filed 1990·Granted May 12, 1992·22 cites·12 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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