Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4707753 | Disk drive head access mechanism | William J. Friehauf, Donovan M. Janssen, Alan J. Kirton, Michael E. Nard | 1987-11-17 |
| 4636892 | Flexible disk drive optimized for automated manufacture | William J. Friehauf, Donovan M. Janssen, Alan J. Kirton, Robert M. Murphy | 1987-01-13 |
| 4628385 | Two stage colleting in a flexible disk drive | Donovan M. Janssen, Alan J. Kirton, Robert M. Murphy | 1986-12-09 |
| 4626943 | Torsional actuator for loading and unloading flexible disk drive | Donovan M. Janssen, Alan J. Kirton, Robert M. Murphy | 1986-12-02 |
| 4605218 | Constant force roll assembly | James A. Knepper | 1986-08-12 |
| 4254287 | Removal of catalyst from ethoxylates by centrifugation | William C. Ziegenhain, R. Tom Jackson | 1981-03-03 |