Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5114479 | Dye-latex combinations and use in aqueous inks | William P. Keaveney | 1992-05-19 |
| 4910236 | Pigment product | Thomas E. Foye, Edward K. Sasamoto | 1990-03-20 |
| 4824610 | Colorants for ball-point pen and ribbon inks | Louis R. de Alvare, Floyd G. Spence | 1989-04-25 |
| 4525217 | Process for preparing ferriferrocyanide pigments | Arvind S. Patil, John H. Bantjes, Louis J. Pepoy | 1985-06-25 |
| 4298526 | Preparation of easily dispersible and deeply colored pigmentary forms | Fritz Guellich, Karl Roth, Alois Wiesenberger | 1981-11-03 |
| 4294620 | Phthalocyanine formulations | Joachim Kranz | 1981-10-13 |
| 4256507 | Pigment formulations | Joachim Kranz, Rudolf Polster, Alois Wiesenberger | 1981-03-17 |
| 4255203 | Pigment formulations | Joachim Kranz | 1981-03-10 |