Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6066379 | Repulpable, water repellant paperboard | Tung C. Ma, Arnold L. Berzins, Charles J. Davis | 2000-05-23 |
| 5635279 | Repulpable, water repellant paperboard | Tung C. Ma, Arnold L. Berzins, Charles J. Davis | 1997-06-03 |