Enter assignee name

% Expired Patents = 50.0

Forward Citations = 44

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4 inventors (with patents filed for the assignee):

Francis K King (14 out of 23 patents)

Jeffrey F Liu (12 out of 14 patents)

Shand-Ling Mao (2 out of 4 patents)

4. Ranvir Koshal (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 7336569 - Optical disk tracking servo circuit enabled to compensate for non-continuous track segments or prolonged defect (2008-02-26),

2. 7334733 - Data access device using rotational head to access data stored in data strips and data arc segments or data circles (2008-02-26),

3. 7185814 - Layer structure and method of manufacture for optical memory strip (OMS) (2007-03-06),

4. 6934098 - Data card with a full circular track for alignment and amplitude calibration (2005-08-23),

5. 6775080 - Data access device implemented with open and closed control loops to access data stored in discrete stepwise segments (2004-08-10),

6. 6728059 - Magnetic data card servo writer (2004-04-27),

7. 6588671 - Positioning of a recording head for a data storage device (2003-07-08),

8. 6545831 - Servo-sector arrangement over several data arcs for a rotational head data recording and retrieving system (2003-04-08),

9. 6502755 - Optical data storage card (2003-01-07),

10. 6499659 - Pulse shaping for a transformer coupled read/write recording device (2002-12-31),

11. 6417980 - Magnetic data card servo writer (2002-07-09),

12. 6339569 - Optical data card servo writer (2002-01-15),

13. 6311893 - Optical data access system with data card reader having a single rotational moving pickup head (2001-11-06),

14. 6307709 - Magnetic data storage card (2001-10-23),

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