Inventor

LIU FRANCIS H

US33 patents

⚠️ This page may combine multiple inventors who share the name “LIU FRANCIS H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU FRANCIS H

WESTERN DIGITAL FREMONT LLC

Magnetic writer having a split yoke

Magnetic writer having a split yoke

Read/write head with dynamic flying height control by magnetostriction

Write element with recessed pole and heat sink layer for ultra-high density writing

Magnetic head with stitched top pole layer and single layer coil or solenoidal coil

Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layer

Method for manufacturing a shielded pole magnetic head for perpendicular recording

Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer

Magnetic write head having resistive heater coil

Perpendicular magnetic recording head having nonmagnetic insertion layers

Magnetic head with thin trailing pedestal layer

Method and system for providing perpendicular magnetic recording transducers

WESTERN DIGITAL FREMONT INC

Magnetic head with stitched top pole layer and single layer coil or solenoidal coil

Write element for perpendicular recording in a data storage system

Shielded pole magnetic head for perpendicular recording

Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field

Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field

Method of using a magnetic write head having an internal heater

Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the same

Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same

Magnetic read head with recessed hard bias and current leads

READ RITE CORP

Thin film read head with coplanar pole tips

Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals

Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals

Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction

Bias-free symmetric dual spin valve giant magnetoresistance transducer

Thin film magnetic structure having ferromagnetic and antiferromagnetic layers

Low noise magnetic head for high frequency recording

Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers

LI SHAOPING

Disk drive comprising a dual read element and delay circuitry to improve read signal

Disk drive comprising a dual read element and delay circuitry to improve read signal

(unassigned)

Thin film read head with coplanar pole tips

WESTERN DIGITAL TECH INC

Method and system for performing EAMR recording at high density using a large thermal spot size