Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D449377 | Tabs on a personal respiratory protection device | Christopher P. Henderson, John W. Bryant, Nicholas J. Gloag | 2001-10-16 |
| 6148817 | Multi-part headband and respirator mask assembly and process for making same | John W. Bryant, James F. Dyrud, Christopher P. Henderson, Harold J. Seppala, Elfed I. Williams | 2000-11-21 |
| 6125849 | Respiratory masks having valves and other components attached to the mask by a printed patch of adhesive | Elfed I. Williams | 2000-10-03 |
| D431647 | Personal respiratory protection device having an exhalation valve | Christopher P. Henderson, John W. Bryant, James F. Dyrud | 2000-10-03 |
| 6123077 | Flat-folded personal respiratory protection devices and processes for preparing same | Graham J. Bostock, John W. Bryant, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud | 2000-09-26 |
| 6099670 | Ultrasonic bonding method | John W. Louks, Donald L. Pochardt, Christopher P. Henderson | 2000-08-08 |
| 6070579 | Elastomeric composite headband | John W. Bryant, James F. Dyrud, Christopher P. Henderson, Dennis L. Krueger, Harold J. Seppala +1 more | 2000-06-06 |
| D424688 | Respiratory protection mask | John W. Bryant, Christopher P. Henderson, James F. Dyrud | 2000-05-09 |
| D416323 | Bond pattern for a personal respiratory protection device | Christopher P. Henderson, John W. Louks, Donald L. Pochardt | 1999-11-09 |
| 5967142 | Method for connecting two components, especially in the assembly of diaphragm valves | Jazini Dorcheh | 1999-10-19 |
| 5724677 | Multi-part headband and respirator mask assembly and process for making same | John W. Bryant, James F. Dyrud, Christopher P. Henderson, Harold J. Seppala, Elfed I. Williams | 1998-03-10 |