Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798887 | Azo dyes of methylaniline disulfonic acid coupled with naphthylamine sulfonic acid | Heinz-Wolfgang Krueger, Manfred Patsch | 1989-01-17 |
HL
Hartmut Lardon
Overall (1989): #108,266 of 140,708Top 80%
1
Patents 1989