Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9194273 | Apparatus, system, and method for aftertreatment control and diagnostics | John M. Janssen, Matthew L. Schneider | 2015-11-24 |
| 8842283 | Apparatus, system, and method for detecting engine fluid constituents | John M. Janssen, Jacob Y. Wong | 2014-09-23 |
| 8648322 | Optical sensing in an adverse environment | Jacob Y. Wong | 2014-02-11 |
| 8223337 | Apparatus, system, and method for aftertreatment control and diagnostics | John M. Janssen, Matthew L. Schneider | 2012-07-17 |
| 8218147 | Apparatus, system, and method for detecting engine fluid constituents | John M. Janssen, Jacob Y. Wong | 2012-07-10 |
| 7389771 | Closed loop EGR control method and system using water content measurement | Eric Andrews, Tim Frazier | 2008-06-24 |
| 7089922 | Apparatus, system, and method for minimizing NOx in exhaust gasses | — | 2006-08-15 |
| 5172472 | Multi-layer rigid prototype printed circuit board fabrication method | Paul Duncanson | 1992-12-22 |
| 4767489 | Computer aided printer-etcher | — | 1988-08-30 |