Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331810 | Low thermal capacitance exhaust system for an internal combustion engine | Keith C. Ingermann | 1994-07-26 |
| 5293743 | Low thermal capacitance exhaust processor | Mark A. Sickels | 1994-03-15 |
| 5048287 | Tuned exhaust processor assembly | Michael G. Howe, James C. Arthur | 1991-09-17 |
| 5009065 | Tuned exhaust processor assembly | Michael G. Howe, James C. Arthur | 1991-04-23 |
| 4961314 | Tuned exhaust processor assembly | Michael G. Howe, James C. Arthur | 1990-10-09 |
| RE33118 | Exhaust processor | George E. Scheitlin, Mark A. Sickels | 1989-11-28 |
| 4625511 | Exhaust processor | George E. Scheitlin, Mark A. Sickels | 1986-12-02 |