Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626436 | Monitoring seal system | Guy Gardner Williamson | 2003-09-30 |
| 6142478 | Gas lubricated slow speed seal | John P. Czubek, Ralph P. Gabriel, Anca Vasilache, Robert Peter Rieger, James R. Wasser | 2000-11-07 |
| 5605339 | Non-contacting mechanical face seal | Jon Hamaker | 1997-02-25 |
| 5492341 | Non-contacting, gap-type seal having a ring with a patterned seal face | Jon Hamaker, Peter Kay | 1996-02-20 |
| 5441283 | Non-contacting mechanical face seal | Jon Hamaker | 1995-08-15 |
| 5217233 | Spiral groove seal system for sealing a high pressure gas | Paul L. Feltman, Jr. | 1993-06-08 |
| 5172918 | Secondary seal for gas turbines | Peter Kay | 1992-12-22 |
| 5090712 | Non-contacting, gap-type seal having a ring with a patterned microdam seal face | Jon Hamaker | 1992-02-25 |
| 5071141 | Spiral groove seal arrangement for high vapor-pressure liquids | Wei-Tang Lai | 1991-12-10 |
| 4889348 | Spiral groove seal system for high vapor-pressure liquids | Donald E. Amundson, Jon Hamaker, Josef Sedy | 1989-12-26 |