Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6767492 | Extrusion die and process | Scott G. Norquist, Alan J. Sipinen, Thomas P. Hanschen, Ronald P. Leseman | 2004-07-27 |
| 6722366 | Method of making a flat-folded personal respiratory protection device | Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, James F. Dyrud | 2004-04-20 |
| 6715489 | Processes for preparing flat-folded personal respiratory protection devices | Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, James F. Dyrud | 2004-04-06 |