Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304375 | Spermicidal coating composition | Gerwig Marquardt | 1994-04-19 |
| 5013858 | Stablized polyorganosiloxanes and their use as a power transmission medium | Gerwig Marquardt | 1991-05-07 |