Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806327 | Process for the preparation of crystalline sheet-type alkali metal silicates | Hans-Peter Rieck | 1989-02-21 |
MS
Martin Schott
Overall (1989): #78,944 of 140,708Top 60%
1
Patents 1989