Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12404793 | Dual function catalyst preheating and EGR system | Ryan Sturgeon, John D Frederick, Kenneth E Hardman | 2025-09-02 |
| 12331672 | Dual-acting valve enabled catalyst bypass | Michael Schmidt, David Scott, Philip J Insalaco | 2025-06-17 |
| 12264610 | Cold start catalyst bypass system | John D Frederick, Kenneth E Hardman | 2025-04-01 |
| 11994051 | Vehicle bypass catalyst diagnostic system | Steven C Wante, Roger C Sager | 2024-05-28 |