Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871489 | Spherical particles having narrow size distribution made by ultrasonic vibration | — | 1989-10-03 |
| 4804643 | Zirconia ceramic article toughened with SiC whiskers | Kenneth Chyung, Kishor Purushottam Gadkaree, Raja R. Wusirika | 1989-02-14 |