Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340558 | Vermiculite composition with improved thermal expansion properties | Semyon D. Friedman, Chia-Chih Ou, Robert M. Spotnitz, Shaohai Wu | 1994-08-23 |
| 5326500 | Vermiculite composition with improved chemical exfoliation | Semyon D. Friedman, Chia-Chih Ou, Robert M. Spotnitz, Shaohai Wu | 1994-07-05 |