Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834960 | Process for purifying phosphorous acid | Jurgen Grosse, Gunther Schimmel | 1989-05-30 |
BH
Bernhard Hofmann
Overall (1989): #129,648 of 140,708Top 95%
1
Patents 1989