Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911903 | Spherical SIO.sub.2 particles | Klaus Unger, Joachim Kinkel | 1990-03-27 |
| 4775520 | Spherical SiO.sub.2 particles | Klaus Unger, Joachim Kinkel | 1988-10-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911903 | Spherical SIO.sub.2 particles | Klaus Unger, Joachim Kinkel | 1990-03-27 |
| 4775520 | Spherical SiO.sub.2 particles | Klaus Unger, Joachim Kinkel | 1988-10-04 |