Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12070634 | Exhalation valve and respirator including same | Thomas J. Xue | 2024-08-27 |
| 12017175 | Pleated air filter with bridging filaments and continuous-contact filaments | Zhiqun Zhang, Nhat Ha T. Nguyen, Jimmy M. Le, Glen O. Gregerson, Bryan L. Gerhardt | 2024-06-25 |
| D900306 | Valve cover | Thomas J. Xue | 2020-10-27 |
| D882758 | Valve cover | Thomas J. Xue | 2020-04-28 |
| D849245 | Valve cover | Thomas J. Xue | 2019-05-21 |
| D843562 | Valve cover with diamond pattern | Thomas J. Xue | 2019-03-19 |
| D842983 | Valve cover | Thomas J. Xue | 2019-03-12 |
| D828546 | Valve cover with openings | Thomas J. Xue | 2018-09-11 |
| D827812 | Valve cover with openings | Thomas J. Xue | 2018-09-04 |
| D827811 | Valve cover | Thomas J. Xue | 2018-09-04 |
| D704824 | Respirator having folded nose region | Dean R. Duffy | 2014-05-13 |
| 6824718 | Process of making a fibrous electret web | Alan D. Rousseau | 2004-11-30 |
| 6454986 | Method of making a fibrous electret web using a nonaqueous polar liquid | Alan D. Rousseau, Marvin E. Jones, Seyed A. Angadjivand | 2002-09-24 |
| 6406657 | Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid | Alan D. Rousseau | 2002-06-18 |
| 6375886 | Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid | Seyed A. Angadjivand, Michael G. Schwartz, Marvin E. Jones | 2002-04-23 |
| 5614105 | Cartridge filters with insoluble enzyme particulates contained thereon | Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson | 1997-03-25 |
| 5478466 | Cartridge filters with insoluble enzyme particulates contained thereon | Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson | 1995-12-26 |
| 5468847 | Method of isolating and purifying a biomacromolecule | Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson +2 more | 1995-11-21 |