Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630308 | Laser scoring of packaging substrates | — | 1997-05-20 |
| 5158499 | Laser scoring of packaging substrates | — | 1992-10-27 |
| 4881649 | Package having inseparable seals and a modified ply-separation opening | Joseph C. Hsu | 1989-11-21 |
| 4704314 | Film and package having strong seals and a modified ply-separation opening | Joseph C. Hsu | 1987-11-03 |
| 4700531 | Method of forming a package having strong seals and a modified ply-separation opening | Joseph C. Hsu | 1987-10-20 |
| 4615926 | Film and package having strong seals and a modified ply-separation opening | Joseph C. Hsu | 1986-10-07 |