Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6903893 | Energy storage for use in emergency head retraction in disk drives | — | 2005-06-07 |
| 6894453 | Method and apparatus to measure disk drive head load/unload velocity | David Drouin | 2005-05-17 |
| 5418657 | Track address detecting means by HDD sector servo method | Michael Machado, Ronald R. Moon, Richard Oswald | 1995-05-23 |
| 4563653 | Servo preamplifier and demodulator chain using transconductance balanced modulators | — | 1986-01-07 |
| 4425534 | Linear motor velocity sensor | — | 1984-01-10 |
| 4384309 | Closed loop servo demodulator for positioning a servo head | — | 1983-05-17 |
| 4301416 | Servo preamplifier and demodulator chain using transconductance balanced modulators | — | 1981-11-17 |
| 4195318 | High density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmission | Robert Price, John W. Craig, Hartvig E. Melbye | 1980-03-25 |