Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077428 | Disk drive correcting position error signal based on velocity of head | Min Chen, Qixing Zheng | 2011-12-13 |
| 7095580 | Methods to determine gross and fine positioning on a reference surface of a media | Richard M. Ehrlich, Gary W. Calfee, Anton Gerasimov | 2006-08-22 |
| 7092182 | Marker-zone to determine gross positioning on a reference surface of a media | Richard M. Ehrlich, Gary W. Calfee, Anton Gerasimov | 2006-08-15 |
| 6061200 | In-drive correction of servo pattern errors | Stanley H. Shepherd, Richard M. Ehrlich, Richard T. Curran, William Akin | 2000-05-09 |
| 5793559 | In drive correction of servo pattern errors | Stanley H. Shepherd, Richard M. Ehrlich, Richard T. Curran, William Akin | 1998-08-11 |
| 5444583 | Disk drive having on-board triggered digital sampling analyzer | Richard M. Ehrlich | 1995-08-22 |