Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8687307 | Disk drive detecting gas leaking from head disk assembly | — | 2014-04-01 |
| 8636375 | Shroud plate with lighting system | Ronald R. Soto, Jonathon R. Prendergast | 2014-01-28 |
| 8498172 | Data storage device evaluating frequency range of supply voltage to detect power failure | Norman D. Gardner | 2013-07-30 |
| 8337036 | Shroud plate with lighting system | Ronald R. Soto, Jonathon R. Prendergast | 2012-12-25 |
| 7649701 | Magnetically activated switch assembly | Jonathon R. Prendergast | 2010-01-19 |
| 7504918 | Magnetically activated switch | Jonathon R. Prendergast | 2009-03-17 |
| 7006320 | Disk drive comprising a multi-phase spindle motor having a center tap connectable to a secondary supply voltage | George J. Bennett | 2006-02-28 |
| 6876508 | Disk drive comprising control circuitry powered by a secondary voltage supplied by a center tap of a spindle motor during a normal operating mode | George J. Bennett | 2005-04-05 |
| 6847504 | Split VCM actuator | George J. Bennett | 2005-01-25 |
| 6826007 | Disk drive using dual slope integrator to extract velocity of an actuator arm from a back EMF voltage | — | 2004-11-30 |
| 6674600 | Disk drive having separate motion sensors for base and actuator | Raffi Codilian | 2004-01-06 |
| 6417979 | Disk drive including strain transducer for detecting mechanical shock | Barry L. Klein | 2002-07-09 |
| 6067206 | Method and apparatus to compensate for servo wedge rotational offset after a head switch | Richard W. Hull, David B. Joan, Vafa James Rakshani, Charles W. Simmons | 2000-05-23 |
| 6052076 | Digital-to-analog converter having high resolution and high bandwidth | George J. Bennett | 2000-04-18 |
| 5889629 | Method and apparatus for controlling disk drive head parking during power interruption | — | 1999-03-30 |
| 5768045 | Hardware velocity limit control system | Donald G. Stupeck | 1998-06-16 |
| 5654840 | Hard disk drive which uses the back EMF of the actuator to detect shocks | John Robert Edwards, Anil Sareen | 1997-08-05 |
| 4998075 | Programmable multiple oscillator circuit | Timothy G. O'Shaughnessy | 1991-03-05 |
| 4920339 | Switchable bus termination and address selector | Robert C. Friend | 1990-04-24 |
| 4745524 | Mounting of printed circuit boards in computers | — | 1988-05-17 |