Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6175472 | Method for generating a position error signal calibration curve in a hard disk drive | — | 2001-01-16 |
| 6067205 | Positioning system for accurately positioning a read/write head over a track | Harlan Mathews | 2000-05-23 |
| 5978168 | MR head differential micro-jog | Harlan Mathews | 1999-11-02 |
| 5867353 | Off-track PES calibration for a magneto-resistive element | — | 1999-02-02 |
| 5616869 | Actuator torque non-linearity compensation for hard disk drives | — | 1997-04-01 |
| 5476015 | Non-linearity compensation for hard disk drives | — | 1995-12-19 |
| 4978849 | Pel placement correction in the scan dimension of a multiple beam laser scanning system | Joan Stagaman Goddard, Wayne A. Overby | 1990-12-18 |
| 4675761 | Magnetic head positioning apparatus and method | William H. Ashbee, Richard S. Kilen, Alan J. Kirton, Larry E. Rittenhouse | 1987-06-23 |
| 4457506 | Servo-controlled automatic document feeder | William H. Ashbee, Mark A. Beran, Donald F. Colglazier, Donovan M. Janssen, John Paul Mantey +3 more | 1984-07-03 |
| 4455018 | Document feeder electronic registration gate | Donald F. Colglazier, Donovan M. Janssen, John Paul Mantey | 1984-06-19 |
| 4395033 | Shingling with controlled force and/or velocity | Donovan M. Janssen, Robert Magno, William S. Seaward | 1983-07-26 |