Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12383773 | Filter cartridge holder with fit-check device | Pierre Legare | 2025-08-12 |
| D1064277 | Respirator filter cartridge | Jennifer A. Chaisson, Jamie V. Blair | 2025-02-25 |
| D1064276 | Respirator filter cartridge | Jennifer A. Chaisson, Jamie V. Blair | 2025-02-25 |
| 12128259 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg +6 more | 2024-10-29 |
| 11219788 | Filter cartridge holder with fit-check device | Pierre Legare | 2022-01-11 |
| D936226 | Respirator filter cartridge | Jennifer A. Chaisson, Jamie V. Blair | 2021-11-16 |
| 11052268 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg +6 more | 2021-07-06 |
| 10751660 | Filter cartridge comprising filter media with adhesively edge-sealed ends, and method of making and using | Pierre Legare, Kevin A. Frankel | 2020-08-25 |
| D887553 | Respirator filter | John S. Huberty, Jennifer A. Chaisson, Denise L. Goddard | 2020-06-16 |
| 9950202 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg +3 more | 2018-04-24 |
| 9744493 | Air filtration device | Pierre Legare, Andrew Murphy, Simon James Smith | 2017-08-29 |
| D795415 | Respirator cartridge having an engagement latch | David M. Blomberg | 2017-08-22 |
| D778430 | Filter cartridge | David M. Blomberg, Pierre Legare, Carl W. Raines, III, Serge Dubeau, Mark W. Schulz +1 more | 2017-02-07 |
| 9517367 | Respiratory mask having a clean air inlet chamber | William A. Mittelstadt, Carl W. Raines, III, Nathan A. Abel, David M. Blomberg, Michael J. Cowell | 2016-12-13 |
| 9440176 | Filter systems including patterned optical analyte sensors and optical readers | Thomas W. Holmquist-Brown, Kiran S. Kanukurthy, Neal A. Rakow | 2016-09-13 |
| 9440775 | Prefilter cover for bidirectional-airflow respirator cartridge | Pierre Legare | 2016-09-13 |
| D763437 | Respirator cartridge body | — | 2016-08-09 |
| D762845 | Respirator cartridge | John S. Huberty, Carl W. Raines, III, Mark W. Schulz, Charlie Wood | 2016-08-02 |
| 9393448 | Side plug-in filter cartridge | Pierre Legare | 2016-07-19 |
| D757928 | Respirator cartridge body | David M. Blomberg, Pierre Legare, Mark W. Schulz | 2016-05-31 |
| D757247 | Respirator cartridge | Pierre Legare, Mark W. Schulz | 2016-05-24 |
| 9259676 | Refillable filter system | Britton G. Billingsley, David M. Castiglione, Pierre Legare | 2016-02-16 |
| D746438 | Respirator filter cover | — | 2015-12-29 |
| D746437 | Respirator mask having a communication grille | David M. Blomberg, Carl W. Raines, III, Mark W. Schulz | 2015-12-29 |
| D745962 | Respirator filter retainer | — | 2015-12-22 |