Inventor

LIU KOWANG

US39 patents

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

LIU KOWANG

HEADWAY TECHNOLOGIES INC

Perpendicular magnetic recording head laminated with AFM-FM phase change material

Power control of TAMR element during read/write transition

Plasmon generator self-annealing with current injection in TAMR

Dual-piece heat sink layer for robust reader in magnetic recording head

Electric field assisted magnetic recording

Magnetic pole self-annealing with current injection in perpendicular magnetic recording (PMR)

PMR writer device with multi-level tapered write pole

Magnetic head for perpendicular magnetic recording including a stopper layer for suppressing protrusion of the front end face of a shield

Magnetostrictive actuator in a magnetic head

Ta/W film as heating device for dynamic fly height adjustment

Heat extractor for magnetic reader-writer

HEADWAY TECH INC

Heat sink structure for microwave-assisted magnetic recording (MAMR) head

Magnetic core and coil design for double perpendicular magnetic recording (PMR) writers

Dual perpendicular magnetic recording (PMR) writer application with special up and down head assignment for best areal density in hard disk drive (HDD)

Dual write heater for slider surface topography control in double perpendicular magnetic recording (PMR) writers

Optimizing a current distribution in write heads for efficient energy-assisted magnetic recording

Magnetic core and coil design for double perpendicular magnetic recording (PMR) writers

Optimizing a current distribution in write heads for efficient energy-assisted magnetic recording

Perpendicular magnetic recording head equipping a spin torque oscillator element with an electric current in side gaps

Recessed write gap material for enhanced bias current injection and maximizing aerial density capacity in perpendicular magnetic recording

Patterned reader shields for a cooler reader

SAE MAGNETICS HK LTD

Protective shields under touchdown conditions for thermally assisted perpendicular magnetic recording

Bumper pad design for TAMR drives

Semiconductor laser for thermally-assisted magnetic recording head

DFH heater design

Light source unit and thermally-assisted magnetic head

BAI ZHIGANG

PMR writer device with multi-level tapered write pole

PMR writer device with multi-level tapered write pole

PMR write with flux choking area

Method of forming a PMR writer device with multi-level tapered write pole

LIU KOWANG

TAMR structure with HDI sensor for head-disk interference and temperature rise sensing

Dynamic flying height read/write head with off-track contact capability at touch down in hard disk drives

ZHOU YUCHEN

Perpendicular magnetic recording head laminated with AFM-FM phase change material

Method of manufacturing a perpendicular magnetic recording head laminated with AFM-FM phase change material

WU YAN

Composite writer shield for improving writer performance

Insertion under read shield for improved read gap actuation in dynamic flying height

SCHRECK ERHARD

Vertically stacked DFH heater design for protrusion shape control

Thermally-assisted magnetic recording head capable of reducing the transient protrusion of an antenna

OPLINK COMMUNICATIONS INC

Precision dispensing apparatus and method for manufacturing thin-film optical assembly