Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5330812 | Sheet material with improved cut resistance | Anthony Robert Knoerzer, Pang-Chia Lu, Conway F. Shields | 1994-07-19 |
| 4931327 | White opaque opp film for tamper evident package | Leland L. Liu, Michael T. Heffelfinger | 1990-06-05 |