Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9334959 | Radially notched piston rings | Matthew Hartford, Kurt W. Johnson | 2016-05-10 |
| 7267602 | Seal assembly manufacturing methods | Maurice J. Moriarty, Matthew Hartford | 2007-09-11 |
| 7207870 | Seal assembly manufacturing methods and seal assemblies manufactured thereby | Maurice J. Moriarty, Matthew Hartford | 2007-04-24 |
| 6899595 | Seal assembly manufacturing methods and seal assemblies manufactured thereby | Maurice J. Moriarty, Matthew Hartford | 2005-05-31 |