Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11883695 | Respirator mask with air-saver switch | Darrill L. Plummer, Dustin Carroll Clark | 2024-01-30 |
| 11077323 | Respirator mask with air-saver switch | Darrill L. Plummer, Dustin Carroll Clark | 2021-08-03 |
| 10946223 | Facemask nosecup retained by voicemitters | Eric James Bassani, Jeffrey S. Vogus, Darin K. Thompson, Graham Peter Wilson, Carl Estcourt Tucker | 2021-03-16 |
| 10661104 | Reconfigurable full facemask having a cartridge module for respiratory protection | Daniel C. Symons, Dyfan Evans, John David Mouser, Darin K. Thompson | 2020-05-26 |
| 8955516 | Face seals for respirators and method of manufacturing respirators | Shaila Gaffney, Troy Baker | 2015-02-17 |
| 8402966 | Air purifying respirator having inhalation and exhalation ducts to reduce rate of pathogen transmission | Amy Elizabeth Staubs, Michael Parham, Sioned Owens, Sean Austerbery, Gareth Roberts +1 more | 2013-03-26 |
| 7748380 | Combined air-supplying/air-purifying system | Jerry A. Phifer, William E. Parson, Robert Daniel Williams | 2010-07-06 |
| 7658190 | Portable air-purifying system utilizing enclosed filters | Jerry A. Phifer, William E. Parson, Robert Daniel Williams | 2010-02-09 |