Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4299779 | Catalytic reduction of 2-nitronaphthalene-4,8-disulfonic acid ammonium salt | — | 1981-11-10 |
| 4266939 | Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo compounds and coloring process | Anton F. Tschopp, David G. Evans | 1981-05-12 |
| 4256671 | Production of 2,4- and 2,6-diaminotoluenes | David G. Haslam, David E. Allen | 1981-03-17 |