Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10253884 | Gasket having upper and lower active layers and a spacer layer | Thomas P. Plunkett, Ernest Oxenknecht | 2019-04-09 |
| 7111505 | Multi-layer steel cylinder head gasket with integrated pressure sensor | Frank Popielas, Jeffery A. Foster, James S. Pietraski, Lawrence E. Peck, James T. Mikos | 2006-09-26 |
| 6951338 | Cylinder head gasket | — | 2005-10-04 |
| 6739183 | Multiple-layer cylinder head gasket with integral pressure sensor apparatus for measuring pressures within engine cylinders | — | 2004-05-25 |
| 5558344 | Exhaust pipe flange gasket | Rob Lehmann | 1996-09-24 |
| 5490681 | Three layer metal gasket with dual coating | Thomas P. Plunkett | 1996-02-13 |
| 5297806 | Method of making multi-density composite gaskets | — | 1994-03-29 |
| 5277434 | Multiple layer cylinder head gasket | Thomas P. Plunkett | 1994-01-11 |