Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6453497 | Oral care device | Casper W. Chiang, Andy Yang | 2002-09-24 |
| 5320170 | Oil recovery process employing horizontal and vertical wells in a modified inverted 5-spot pattern | Wann-Sheng Huang, Jack Hsu | 1994-06-14 |