Liu; Francis H.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Liu; Francis H..The latest application filed is for "write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same".

Company Profile

0.35.1

Liu; Francis H. - Fremont CA
Liu; Francis H - Fremont 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
Magnetic writer having a split yoke Grant 8,537,495 - Luo , et al. September 17, 2	2013-09-17
Disk drive comprising a dual read element and delay circuitry to improve read signal Grant 8,514,506 - Li , et al. August 20, 2	2013-08-20
Method and system for performing EAMR recording at high density using a large thermal spot size Grant 8,385,157 - Champion , et al. February 26, 2	2013-02-26
Magnetic writer having a split yoke Grant 8,373,945 - Luo , et al. February 12, 2	2013-02-12
Disk drive comprising a dual read element and delay circuitry to improve read signal Grant 8,139,301 - Li , et al. March 20, 2	2012-03-20
Perpendicular magnetic recording head having nonmagnetic insertion layers Grant 7,688,546 - Bai , et al. March 30, 2	2010-03-30
Read/write head with dynamic flying height control by magnetostriction Grant 7,660,080 - Liu , et al. February 9, 2	2010-02-09
Write element with recessed pole and heat sink layer for ultra-high density writing Grant 7,522,379 - Krounbi , et al. April 21, 2	2009-04-21
Method and system for providing perpendicular magnetic recording transducers Grant 7,508,627 - Zhang , et al. March 24, 2	2009-03-24
Magnetic head with stitched top pole layer and single layer coil or solenoidal coil Grant 7,443,632 - Stoev , et al. October 28, 2	2008-10-28
Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layer Grant 7,375,926 - Stoev , et al. May 20, 2	2008-05-20
Method for manufacturing a shielded pole magnetic head for perpendicular recording Grant 7,337,530 - Stoev , et al. March 4, 2	2008-03-04
Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer Grant 7,310,204 - Stoev , et al. December 18, 2	2007-12-18
Magnetic head with thin trailing pedestal layer Grant 7,292,409 - Stoev , et al. November 6, 2	2007-11-06
Magnetic write head having resistive heater coil Grant 7,283,327 - Liu , et al. October 16, 2	2007-10-16
Magnetic head with stitched top pole layer and single layer coil or solenoidal coil Grant 7,248,433 - Stoev , et al. July 24, 2	2007-07-24
Write element for perpendicular recording in a data storage system Grant 7,239,478 - Sin , et al. July 3, 2	2007-07-03
Magnetic read head with recessed hard bias and current leads Grant 7,212,384 - Stoev , et al. May 1, 2	2007-05-01
Shielded pole magnetic head for perpendicular recording Grant 7,193,815 - Stoev , et al. March 20, 2	2007-03-20
Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field Grant 7,126,790 - Liu , et al. October 24, 2	2006-10-24
Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field Grant 7,126,788 - Liu , et al. October 24, 2	2006-10-24
Method of using a magnetic write head having an internal heater Grant 7,092,195 - Liu , et al. August 15, 2	2006-08-15
Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same Grant 6,906,894 - Chen , et al. June 14, 2	2005-06-14
Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same App 20050007696 - Chen, Yingjian ; et al.	2005-01-13
Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same Grant 6,791,793 - Chen , et al. September 14, 2	2004-09-14
Thin film read head with coplanar pole tips Grant 6,459,552 - Liu , et al. October 1, 2	2002-10-01
Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals Grant 6,392,850 - Tong , et al. May 21, 2	2002-05-21
Thin film read head with coplanar pole tips Grant 6,073,338 - Liu , et al. June 13, 2	2000-06-13
Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals Grant 5,859,754 - Tong , et al. January 12, 1	1999-01-12
Low noise magnetic head for high frequency recording Grant 5,792,547 - Liu , et al. August 11, 1	1998-08-11
Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction Grant 5,726,841 - Tong , et al. March 10, 1	1998-03-10
Bias-free symmetric dual spin valve giant magnetoresistance transducer Grant 5,705,973 - Yuan , et al. January 6, 1	1998-01-06
Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers Grant 5,612,098 - Tan , et al. March 18, 1	1997-03-18

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