Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797436 | Oligomeric diazaoxaspirodecanes, preparation thereof and use thereof as light stabilizers for polymers | Josef Ertl | 1989-01-10 |
HK
Helmut Korbanka
Overall (1989): #106,669 of 140,708Top 80%
1
Patents 1989