Issued Patents All Time
Showing 1–25 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12128259 | Respirator negative pressure fit check devices and methods | Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +6 more | 2024-10-29 |
| 11992078 | Headwear suspension attachment element | David M. Castiglione, Michael J. Cowell, Nathan A. Abel, Jill E. Gulliver, Ian Kelsall +3 more | 2024-05-28 |
| 11865375 | Respirator fit check sealing devices and methods | David M. Blomberg, Thomas W. Holmquist-Brown, Adam J. Cernohous, Michael J. Cowell | 2024-01-09 |
| 11305134 | Respirator having noncircular centroid-mounted exhalation valve | — | 2022-04-19 |
| 11219787 | Respirator fit check sealing devices and methods | David M. Blomberg, Thomas W. Holmquist-Brown, Adam J. Cernohous, Michael J. Cowell | 2022-01-11 |
| 11052268 | Respirator negative pressure fit check devices and methods | Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +6 more | 2021-07-06 |
| 10391338 | Sleeve-fit respirator cartridge | David M. Blomberg, Michael J. Cowell, Carl W. Raines, III, Nathan A. Abel | 2019-08-27 |
| 10143864 | Respirator having noncircular centroid-mounted exhalation valve | — | 2018-12-04 |
| 9950202 | Respirator negative pressure fit check devices and methods | Carl W. Raines, III, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +3 more | 2018-04-24 |
| 9776023 | Respiratory mask having a nose support extension | — | 2017-10-03 |
| D787659 | Respirator with face seal flexing region | — | 2017-05-23 |
| D787660 | Respirator mask having a face seal flexing region | David R. Stein, Charlie Wood | 2017-05-23 |
| D779674 | Filter element having a connector | David M. Blomberg, Elizabeth D. Cadogan, John S. Huberty, Ryan D. Kracht, Michael J. Svendsen +1 more | 2017-02-21 |
| D776258 | Respirator with face seal multiple flexing region | — | 2017-01-10 |
| 9517367 | Respiratory mask having a clean air inlet chamber | Gary E. Dwyer, Carl W. Raines, III, Nathan A. Abel, David M. Blomberg, Michael J. Cowell | 2016-12-13 |
| 9510626 | Sleeve-fit respirator cartridge | David M. Blomberg, Michael J. Cowell, Carl W. Raines, III, Nathan A. Abel | 2016-12-06 |
| D767116 | Respirator mask having an exhalation port | David M. Blomberg | 2016-09-20 |
| D759807 | Respirator mask exhalation port | David M. Blomberg, Carl W. Raines, III, Mark W. Schulz | 2016-06-21 |
| 9259058 | Personal protective equipment strap retaining devices | Thomas J. Brace, David M. Blomberg | 2016-02-16 |
| 9247788 | Personal protective equipment strap retaining devices | Thomas J. Brace, David M. Blomberg | 2016-02-02 |
| D744088 | Respirator mask having a circular button | David M. Blomberg, Kent E. Lageson, Carl W. Raines, III, Charlie Wood | 2015-11-24 |
| D743536 | Respirator mask having a circular button | David M. Blomberg | 2015-11-17 |
| D742504 | Respirator mask | David M. Blomberg | 2015-11-03 |
| D740932 | Respirator with raised face seal flexing region | — | 2015-10-13 |
| 9149669 | Respiratory protection device harness assembly | Michael J. Cowell, Carl W. Raines, III, Thomas G. Skulley, Nathan A. Abel, Fredrik Ericsson +3 more | 2015-10-06 |