Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D732670 | Respirator filter | — | 2015-06-23 |
| 8858692 | Filter systems including patterned optical analyte sensors and optical readers | Thomas W. Holmquist-Brown, Kiran S. Kanukurthy, Neal A. Rakow | 2014-10-14 |
| 8821621 | Filter systems including optical analyte sensors and optical readers | Thomas W. Holmquist-Brown, Kiran S. Kanukurthy, Neal A. Rakow | 2014-09-02 |
| D690413 | Filter cover for powered air purifying respirator | Nathan A. Abel, John M. Pilgrim, James E. Steffen | 2013-09-24 |
| D681190 | Filter cover for powered air purifying respirator | Nathan A. Abel, James E. Steffen, John M. Pilgrim | 2013-04-30 |
| D680641 | Filter cover for powered air purifying respirator | Nathan A. Abel, James E. Steffen, John M. Pilgrim | 2013-04-23 |