Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586719 | Mechanical seal | Joseph A. Marsi, Lawrence I. Takumi, Clark S. Boster, Gordhan K. Vaghasia, Jerel E. Ellison +1 more | 1986-05-06 |
| 4511149 | Mechanical seal with cylindrical balance sleeve | — | 1985-04-16 |
| 4426092 | Mechanical seal assembly | — | 1984-01-17 |
| 4418921 | Mechanical seal | Joseph A. Marsi | 1983-12-06 |
| 4323255 | Mechanical seal with eccentric seal faces | — | 1982-04-06 |
| 4266786 | Mechanical seal assembly | — | 1981-05-12 |
| 4241927 | Mechanical seal | — | 1980-12-30 |