Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812319 | Method for making package having oil-containing product | Joseph C. Hsu | 1989-03-14 |
| 4546882 | Package having oil-containing product | Joseph C. Hsu, George O. Schroeder | 1985-10-15 |
| 4491598 | Package having oil-containing product | Joseph C. Hsu | 1985-01-01 |