Issued Patents All Time
Showing 1–25 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7686993 | Colored polymeric articles having high melt temperatures | Leonardus Franciscus Peeters | 2010-03-30 |
| 7161007 | Oxidation process for preparing quinacridone pigments | Hans Rudolf Merstetter | 2007-01-09 |
| 7077898 | Black pigment compositions | — | 2006-07-18 |
| 6989056 | IR reflective pigment compositions | — | 2006-01-24 |
| 6951075 | Pigment concentrates for coloring seeds | Kenneth Schumann | 2005-10-04 |
| 6902613 | Preparation and use of nanosize pigment compositions | — | 2005-06-07 |
| 6869472 | 2,9-dichloroquinacridone pigment | — | 2005-03-22 |
| 6864371 | Preparation of beta quinacridone pigments | — | 2005-03-08 |
| 6800127 | Pigment preparations | — | 2004-10-05 |
| 6688041 | Pigment concentrates for coloring seeds | Kenneth Schumann | 2004-02-10 |
| 6406533 | 6,13-dihydroquinacridone derivatives | — | 2002-06-18 |
| 6375734 | Diketo pyrrolo pyrrole pigment | — | 2002-04-23 |
| 6323342 | Gamma quinacridone pigment | — | 2001-11-27 |
| 6264733 | Pigment particle growth and/or crystal phase directors | — | 2001-07-24 |
| 6248165 | Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Shivakumar Basalingappa Hendi, Zhimin Hao, Abul Iqbal | 2001-06-19 |
| 6225472 | 6,13-dihydroquinacridone derivatives | — | 2001-05-01 |
| 6090196 | Beta quinacridone pigment | — | 2000-07-18 |
| 6063182 | Stir-in pigment compositions | — | 2000-05-16 |
| 6036766 | Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Shivakumar Basalingappa Hendi, Zhimin Hao, Abul Iqbal | 2000-03-14 |
| 6013127 | Process for the preparation of quinacridone solid solutions | — | 2000-01-11 |
| 5997627 | Pigment composition and effect coatings | — | 1999-12-07 |
| 5931997 | Copper phthalocyanine pigment | — | 1999-08-03 |
| 5856488 | Oxidation process for preparing quinacridone pigments | — | 1999-01-05 |
| 5851279 | Copper phthalocyanine pigment | — | 1998-12-22 |
| 5843220 | Process for the preparation of a pigment composition | — | 1998-12-01 |