Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873299 | Batchwise preparation of crosslinked, finely divided polymers | Bernhard H. Nowakowsky, Juergen Beck, Heinrich Hartmann | 1989-10-10 |
| 4855423 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Klaus Glaser | 1989-08-08 |
| 4837330 | Preparation of sulfatobetaines | Gerold Braun, Chung-Ji Tschang, Klaus Glaser | 1989-06-06 |