Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5743012 | Piston and piston ring | David Robert Adams | 1998-04-28 |
| 5064990 | Processing of metal articles | Michael Robert Tinsley, Antony Johns | 1991-11-12 |
| 4677900 | Pistons for internal combustion engines | — | 1987-07-07 |
| 4655983 | Piston rings and their manufacture | — | 1987-04-07 |