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Patent applications and USPTO patent grants for Kempter; Peter.The latest application filed is for "synthesis of triphenodioxazine pigments".
Patent | Date |
---|---|
Synthesis Of Triphenodioxazine Pigments App 20110098466 - Kempter; Peter ;   et al. | 2011-04-28 |
C.I. pigment blue 80-based blue dye Grant 7,686,883 - Kempter , et al. March 30, 2 | 2010-03-30 |
C.I. Pigment Blue 80-Based Blue Dye App 20090121202 - Kempter; Peter ;   et al. | 2009-05-14 |
Mixed crystals of benzimidazolonedioxazine compounds Grant 6,762,299 - Schmidt , et al. July 13, 2 | 2004-07-13 |
Process for preparing new crystal polymorphs of a methyl-substituted benzimidazolone-dioxazine pigment Grant 6,620,931 - Schmidt , et al. September 16, 2 | 2003-09-16 |
Triphendioxazine compounds Grant 6,617,453 - Kaul , et al. September 9, 2 | 2003-09-09 |
Process for preparing new crystal polymorphs of a methyl-substituted benzimidazolone-dioxazine pigment App 20020123626 - Schmidt, Martin U. ;   et al. | 2002-09-05 |
Mixed crystals of benzimidazolonedioxazine compounds App 20020091258 - Schmidt, Martin U. ;   et al. | 2002-07-11 |
Triphendioxazine Grant 6,162,261 - Kempter , et al. December 19, 2 | 2000-12-19 |
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