Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806670 | Preparation of .alpha.-substituted .beta.-dicarbonyl and .beta.-cyanocarbonyl compounds | Walter Gramlich, Klaus Halbritter | 1989-02-21 |
GH
Gerd Heilen
Overall (1989): #112,099 of 140,708Top 80%
1
Patents 1989