Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725859 | Apparatus for delivering air-borne substances | Simon J. Rothenberg, Bernard Greenspan | 2004-04-27 |
| 4767524 | Virtual impactor | Bean Chen, Yung-Sung Cheng, George J. Newton | 1988-08-30 |
| 4463595 | Parallel flow diffusion battery | Yung-Sung Cheng | 1984-08-07 |