Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881993 | Explosive and propellant composition and method of preparation | Claude Furbringer | 1989-11-21 |
| 4841070 | Sulfinyl-ascorbic acid useful as an anti-oxidant | Christof Wehrli | 1989-06-20 |
| 4833259 | Light screening agents | Gustav Erlemann, Christian Fizet | 1989-05-23 |