Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6472963 | Alternating current contactor | Chuanting Liu, Henming Yan, Yinghao Li | 2002-10-29 |
| 6391454 | Controlled release urea-based products | Lijun Mao, Robert J. Petcavich | 2002-05-21 |