Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6568357 | Variable compression ratio pistons and connecting rods | V. Durga Nageswar Rao, Gary A. Vrsek, Jeffrey Eliot Chottiner, Mark Michael Madin | 2003-05-27 |
| 6371062 | Variable compression ratio connecting rods | V. Durga Nageswar Rao, Gary A. Vrsek, Jeffrey Eliot Chottiner, Mark Michael Madin | 2002-04-16 |
| 6167856 | Low friction cam shaft | Vemulapalli D. N. Rao, Harry A. Cikanek, Daniel Michael Kabat | 2001-01-02 |
| 5695199 | Piston sealing assembly | V. Durga Nageswar Rao, Daniel Michael Kabat | 1997-12-09 |