Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686161 | Moisture-sensitive label | John S. Cullen, Thomas H. Powers | 1997-11-11 |
| 5667863 | Oxygen-absorbing label | John S. Cullen, Thomas H. Powers | 1997-09-16 |
| 5641425 | Oxygen absorbing composition | George E. McKedy, Thomas H. Powers | 1997-06-24 |