Issued Patents All Time
Showing 25 most recent of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12128259 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, David M. Blomberg, Michael J. Cowell +6 more | 2024-10-29 |
| 11992078 | Headwear suspension attachment element | David M. Castiglione, Michael J. Cowell, William A. Mittelstadt, Jill E. Gulliver, Ian Kelsall +3 more | 2024-05-28 |
| 11510804 | Muscle or joint support article with a strap | Diane L. Emslander, Dominic J. Julian | 2022-11-29 |
| 11052268 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, David M. Blomberg, Michael J. Cowell +6 more | 2021-07-06 |
| 10391338 | Sleeve-fit respirator cartridge | David M. Blomberg, Michael J. Cowell, William A. Mittelstadt, Carl W. Raines, III | 2019-08-27 |
| 9950202 | Respirator negative pressure fit check devices and methods | William A. Mittelstadt, Carl W. Raines, III, David R. Stein, David M. Blomberg, Michael J. Cowell +3 more | 2018-04-24 |
| D811610 | Support patch | Diane L. Emslander, Dominic J. Julian | 2018-02-27 |
| 9517367 | Respiratory mask having a clean air inlet chamber | Gary E. Dwyer, William A. Mittelstadt, Carl W. Raines, III, David M. Blomberg, Michael J. Cowell | 2016-12-13 |
| 9510626 | Sleeve-fit respirator cartridge | David M. Blomberg, Michael J. Cowell, William A. Mittelstadt, Carl W. Raines, III | 2016-12-06 |
| 9149669 | Respiratory protection device harness assembly | Michael J. Cowell, William A. Mittelstadt, Carl W. Raines, III, Thomas G. Skulley, Fredrik Ericsson +3 more | 2015-10-06 |
| D729380 | Powered air purifying respirator blower | John M. Pilgrim | 2015-05-12 |
| D710304 | Battery pack for powered air purifying respirator (PAPR) | David M. Blomberg | 2014-08-05 |
| D703806 | Respirator belt having bumper cushion | Jia Hu, Sean R. Kilmer, Thomas G. Skulley, James M. Ulwelling | 2014-04-29 |
| D696629 | Large battery pack for powered air purifying respirator (PAPR) | David M. Blomberg | 2013-12-31 |
| D690415 | Respirator support structure | William A. Mittelstadt | 2013-09-24 |
| D690414 | Powered air purifying respirator (PAPR) having control panel | David M. Blomberg, Sean R. Kilmer, James E. Steffen | 2013-09-24 |
| D690413 | Filter cover for powered air purifying respirator | Gary E. Dwyer, John M. Pilgrim, James E. Steffen | 2013-09-24 |
| D684536 | Small battery pack for powered air purifying respirator | David M. Blomberg | 2013-06-18 |
| D683845 | Respirator belt | Jia Hu, Sean R. Kilmer, Thomas G. Skulley, James M. Ulwelling | 2013-06-04 |
| D683013 | Respirator belt having flexible air channels | Kenneth J. Krepel, Jia Hu, Sean R. Kilmer, James M. Ulwelling | 2013-05-21 |
| D683014 | Powered air purifying respirator (PAPR) blower having attachment bosses | Jia Hu, Kenneth J. Krepel, John M. Pilgrim | 2013-05-21 |
| D682418 | Respirator belt having attachment slot | Kenneth J. Krepel, Jia Hu | 2013-05-14 |
| D681190 | Filter cover for powered air purifying respirator | Gary E. Dwyer, James E. Steffen, John M. Pilgrim | 2013-04-30 |
| D680641 | Filter cover for powered air purifying respirator | Gary E. Dwyer, James E. Steffen, John M. Pilgrim | 2013-04-23 |
| D679801 | Powered air purifying respirator blower | John M. Pilgrim | 2013-04-09 |