Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4303407 | Concentrated coloring solutions of a blue tinge based on mixture of 1.4-dialkyl-anthraquinones for the coloring of petroliferous products | Giancarlo Ciocci, Sisto S. Papa | 1981-12-01 |