Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6234171 | Molded respirator containing sorbent particles | James E. Springett, Leonard W. Barrett | 2001-05-22 |
| 6133173 | Nonwoven cohesive wrap | John E. Riedel, Eugene G. Joseph | 2000-10-17 |
| 6102039 | Molded respirator containing sorbent particles | James E. Springett, Leonard W. Barrett | 2000-08-15 |