Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363660 | Orbital type freezing apparatus and method | Yao Li, Albert P. Yundt, Jr., Henry V. Huang | 1994-11-15 |
| 5221439 | Orbital tube evaporator with improved heat transfer | Yao Li, Henry V. Huang, Albert P. Yundt, Jr. | 1993-06-22 |