Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917066 | Swing beam internal-combustion engines | Wayne J. Sohn | 1990-04-17 |
| 4865577 | Noncircular drive | — | 1989-09-12 |
| 4821695 | Swing beam internal combustion engines | — | 1989-04-18 |
| 4418586 | Swash plate drive mechanism | E. Roland Maki | 1983-12-06 |
| 4393820 | Rolling contact rocker arm and pivot | Emil R. Maki, Raymond L. Richard, Jr., Meng-Sang Chew | 1983-07-19 |
| 4332148 | Cyclic phase-change coupling | Emil R. Maki | 1982-06-01 |
| 4270495 | Variable displacement piston engine | E. Roland Maki | 1981-06-02 |