Issued Patents All Time
Showing 1–3 of 3 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 | Ugo Marangelli, Giancarlo Ciocci | 1981-12-01 |
| 4250091 | Water-soluble disazo dyestuff derived from 4,4-diaminobenzanilide | Antonino Condo | 1981-02-10 |
| 4248776 | Symmetrical trisazo dye obtained by coupling tetrazotized 4-4'-diaminozobenzene with 2-carboxymethylamin0-8-naphthol-6-sulphonic acid | Renzo Ferrario | 1981-02-03 |