Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4266939 | Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo compounds and coloring process | John D. Hildreth, David G. Evans | 1981-05-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4266939 | Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo compounds and coloring process | John D. Hildreth, David G. Evans | 1981-05-12 |