Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840901 | Oxidation process for preparing quinacridone pigments | — | 1998-11-24 |
| 5820666 | Organic stir-in pigments | — | 1998-10-13 |
| 5667580 | Pigment compositions | — | 1997-09-16 |
| 5648408 | Organic stir-in pigments | — | 1997-07-15 |
| 5641351 | Pigment compositions based on 3,6-di(biphenyl)1,4-diketo-pyrrolo[3,4c]-pyrrole | — | 1997-06-24 |
| 5584922 | Stir-in organic pigments | — | 1996-12-17 |
| 5453151 | Resinated 2,9-dimethylquinacridone | — | 1995-09-26 |
| 5387281 | Compositions based on 2,9-Dichloroquinacridone pigments | Charles G. Orange | 1995-02-07 |
| 5362780 | Compositions based on 2,9-dichloroquinacridone pigments | Charles G. Orange, Edward E. Jaffe | 1994-11-08 |
| 5347014 | Process for preparing 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole | — | 1994-09-13 |
| 5298076 | Carbazole dioxazine-pigmented plastics and coatings | — | 1994-03-29 |
| 5286863 | Oxidation process for preparing quinacridone pigments | Edward E. Jaffe | 1994-02-15 |
| 5229515 | Process for preparing modified .beta.-quinacridone pigment | Johannes Pfenninger, Walter Zukowski, Edward E. Jaffe | 1993-07-20 |
| 5223624 | Modified gamma-quinacridone pigment | Edward E. Jaffe | 1993-06-29 |
| 5199651 | Grinding organic pigments | — | 1993-04-06 |
| 5194088 | Process for conditioning organic pigments | Edward E. Jaffe | 1993-03-16 |
| 5104918 | Perylenetetracarboxylic acid diimides having long-chain radicals containing carbonyl groups | — | 1992-04-14 |
| 5095056 | 2,9-dichloroquinacridone-pigmented engineering plastics and coatings | Edward E. Jaffe | 1992-03-10 |
| 5084573 | 2,9-dichloroquinacridone in platelet form | Edward E. Jaffe | 1992-01-28 |
| 5074918 | Process for conditioning organic pigments | — | 1991-12-24 |
| 5075195 | Laser marking of plastics objects of any desired shape with special effects | Manfred Hofmann | 1991-12-24 |
| 5063258 | Coating compositions containing molybdenum disulfide | — | 1991-11-05 |
| 5034430 | Novel compositions containing molybdenum disulfide | — | 1991-07-23 |
| 5030734 | Solid solutions of azomethine pigments | — | 1991-07-09 |
| 5013455 | Process for enhancing the filterability of organic pigments | Marius Leimer, Jost von der Crone, Heinz Neuschutz | 1991-05-07 |