Liu; Jeffrey F.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Liu; Jeffrey F..The latest application filed is for "secure optical data card system".

Company Profile

0.4.8

Liu; Jeffrey F. - San Jose CA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Secure optical data card system App 20080267047 - King; Francis K. ; et al.	2008-10-30
Adaptive system to allow multiple update and correction sessions on an optical data storage card App 20060039246 - King; Francis K. ; et al.	2006-02-23
Data card with a full circular track for alignment and amplitude calibration Grant 6,934,098 - King , et al. August 23, 2	2005-08-23
Data access device implemented with open and closed control loops to access data stored in discrete stepwise segments Grant 6,775,080 - King , et al. August 10, 2	2004-08-10
Magnetic data card servo writer Grant 6,728,059 - Liu , et al. April 27, 2	2004-04-27
Magnetic data card servo writer App 20020186495 - Liu, Jeffrey F. ; et al.	2002-12-12
Data card with a full circular track for alignment and amplitude calibration App 20020138808 - King, Francis K. ; et al.	2002-09-26
Optical Data Card Reader System App 20020104882 - LIU, JEFFREY F. ; et al.	2002-08-08
Optical Data Storage Card App 20020014534 - LIU, JEFFREY F. ; et al.	2002-02-07
Magnetic Data Cardreader System App 20010052543 - LIU, JEFFREY F. ; et al.	2001-12-20
Optical data access system with data card reader having a single rotational moving pickup head Grant 6,311,893 - Liu , et al. November 6, 2	2001-11-06
Data access device implemented with open and closed control loops to access data stored in discrete stepwise segments App 20010033446 - King, Francis K. ; et al.	2001-10-25

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