Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11617980 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Gene B. Portelli, Dennis M. Glass, Michael A. Meis +5 more | 2023-04-04 |
| 11607635 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Gene B. Portelli, Dennis M. Glass, Michael A. Meis +5 more | 2023-03-21 |
| 11202982 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Gene B. Portelli, Dennis M. Glass, Michael A. Meis +5 more | 2021-12-21 |
| 10646809 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Gene B. Portelli, Dennis M. Glass, Michael A. Meis +5 more | 2020-05-12 |
| 10363509 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Gene B. Portelli, Dennis M. Glass, Michael A. Meis +5 more | 2019-07-30 |
| 9494817 | Display with nonwoven diffuser | Kazuhiko Toyooka, Hiroki Matsuda, Masaki Yamamuro, James A. Thielen, Eric W. Nelson +1 more | 2016-11-15 |