Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889923 | AZO compounds containing cyano and vinyl-sulfone groups, a process for their preparation and their use as dyestuffs | Peter Mischke | 1989-12-26 |
HS
Hans J. Schladetsch
Overall (1989): #107,779 of 140,708Top 80%
1
Patents 1989