Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6867301 | Oxidation process for highly dispersible quinacridone pigments | Ulrich Schadeli, Linda SnyderAllen | 2005-03-15 |
| 6022970 | Process for preparing 2-anilinoacridones | Kevin R. Gerzevske | 2000-02-08 |
| 5919299 | Process for producing transparent pigmentary quinacridones by acid swelling of premilled subpigmentary quinacridones in the presence of an organic liquid | Lindsay Kilmurray, deceased | 1999-07-06 |
| 5871827 | Finishes containing light interference pigments | Franklin Roberts Hilfiker, Milton John Misogianes | 1999-02-16 |
| 5869625 | Colorant blends containing a salt-forming azo pigment and a pyrrolopyrrole pigment | James Delaney, Jr. | 1999-02-09 |
| 5856508 | Fluorescent yellow 1,2,3,4-Tetrachloro-11H-Isoindolo-2,1-A!-Benzimidazol-11-one pigments | Martin Tanner | 1999-01-05 |
| 5618343 | Pigment compositions for coatings | Shivakumar Basalingappa Hendi | 1997-04-08 |
| 5529623 | Pigmentary solid solutions of pyrrolo[3,4-c]pyrroles and quinacridones | Shivakumar Basalingappa Hendi, James B. Ganci | 1996-06-25 |
| 5472496 | Solid solutions of pyrrolo-[3.4-c]-pyrroles with quinacridonequinones | Shivakumar Basalingappa Hendi, Lindsay Kilmurry | 1995-12-05 |
| 5457203 | Pigmentary synthesis of quinacridone solid solutions | Shivakumar Basalingappa Hendi | 1995-10-10 |
| 5424429 | Preparation of pigmentary 2,9-dichloroquinacridone | Shivakumar Basalingappa Hendi, Donald L. Bauman | 1995-06-13 |
| 5362780 | Compositions based on 2,9-dichloroquinacridone pigments | Fridolin Babler, Charles G. Orange | 1994-11-08 |
| 5286863 | Oxidation process for preparing quinacridone pigments | Fridolin Babler | 1994-02-15 |
| 5229515 | Process for preparing modified .beta.-quinacridone pigment | Johannes Pfenninger, Walter Zukowski, Fridolin Babler | 1993-07-20 |
| 5223624 | Modified gamma-quinacridone pigment | Fridolin Babler | 1993-06-29 |
| 5194088 | Process for conditioning organic pigments | Fridolin Babler | 1993-03-16 |
| 5095056 | 2,9-dichloroquinacridone-pigmented engineering plastics and coatings | Fridolin Babler | 1992-03-10 |
| 5084573 | 2,9-dichloroquinacridone in platelet form | Fridolin Babler | 1992-01-28 |
| 5028643 | Tetrabenzodiazadiketoperylene pigment | — | 1991-07-02 |
| 5025041 | Pearlescent coating compositions | Johannes Pfenninger | 1991-06-18 |
| 4992101 | Process for the preparation of opaque diketopyrrolo-pyrrole pigments | Fridolin Babler | 1991-02-12 |
| 4895948 | Process for preparation of opaque quinacridones | Johannes Pfenninger | 1990-01-23 |
| 4895949 | Process for preparation of quinacridone solid solutions | Johannes Pfenninger | 1990-01-23 |
| 4892899 | Novel compositions based on tetrachloroisoindolinone pigments | Jost von der Crone, Bernhard Medinger | 1990-01-09 |
| 4866112 | Thermoplastics containing a nickel complex pigment | Paul Lienhard | 1989-09-12 |