Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873372 | Isolation of 4,4'-dichlorodiphenyl sulfone | Gerhard Schaefer, Heinz Eilingsfeld, Peter Neumann | 1989-10-10 |
MS
Michael Stumpp
Overall (1989): #75,213 of 140,708Top 55%
1
Patents 1989