Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855423 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Christos Vamvakaris | 1989-08-08 |
| 4837330 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Christos Vamvakaris | 1989-06-06 |