Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8863504 | System, method, and apparatus for determining aftertreatment fluid quality | Mark N. Bays, Thomas A. Grana, Stephen J. Charlton, John C. Wall | 2014-10-21 |
| D619036 | Gemstone | — | 2010-07-06 |
| D619037 | Gemstone | — | 2010-07-06 |
| D619038 | Gemstone | — | 2010-07-06 |
| D554556 | Gemstone | — | 2007-11-06 |
| D554557 | Gemstone | — | 2007-11-06 |
| 5270645 | Linear-output, temperature-stable rotational sensor including magnetic field responsive device disposed within a cavity of a flux concentrator | Mark R. Wheeler, Anne Gebauer, David W. Bull, Stephen R. W. Cooper, Ronald D. Ingraham | 1993-12-14 |