Inventor

DING YUNFEI

US42 patents

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

DING YUNFEI

WESTERN DIGITAL TECH INC

Apparatus and method for writing to magnetic media using an AC bias current to enhance the write field

High-bandwidth STO bias architecture with integrated slider voltage potential control

Magnetic recording head with assisting electric current in trailing shield

Cross track current design for energy assisted magnetic recording

Magnetic recording devices having external alternating current sources

Magnetic recording devices having cross-track current flow to facilitate downtrack magnetic field enhancements

Magnetic recording head having leads over the trailing shield for assisting electric currents

Data storage devices with integrated slider voltage potential control

High-bandwidth STO bias architecture with integrated slider voltage potential control

High-bandwidth STO bias architecture with integrated slider voltage potential control

Apparatus and method for writing to magnetic media using an AC bias current to enhance the write field

Magnetic recording head with an SOT device coupled with side shield

Magnetic recording head with assisting electric current in trailing shield

Magnetic recording head with current path between trailing shield and leading shield for improved resistance

Magnetic recording head with a cross-track current flow in a low resistance path

DC and synchronized energy assisted perpendicular magnetic recording (EPMR) driver circuit for hard disk drive (HDD)

Magnetic recording devices having external alternating current sources

Dynamic DC field compensator for MAMR recording head

Dual FGL and dual SPL spintronic device to reduce perpendicular field at writing location

Spintronic device comprising dual FGL and dual SPL to reduce perpendicular field at writing location

System controlled RF signal source architecture with transducer near pole-tip for microwave assisted magnetic recording

Device lifetime improvement through constant temperature

Data storage devices with integrated slider voltage potential control

MAMR writer with low resistance MAMR stack

Magnetic recording devices and methods using a write-field-enhancement structure and bias current with offset pulses

Resistor network for delivering current and a main pole coil and an assistive write element in a magnetic recording device

Data storage device reverse biasing head element to counter electro-migration

Data storage device reverse biasing head element to counter electro-migration

GRANDIS INC

Method and system for using a pulsed field to assist spin transfer induced switching of magnetic memory elements

Method and system for providing current balanced writing for memory cells and magnetic devices

Method and system for using a pulsed field to assist spin transfer induced switching of magnetic memory elements

Magnetic shielding in magnetic multilayer structures

Method and system for providing magnetic elements having enhanced magnetic anisotropy and memories using such magnetic elements

WESTERN DIGITAL FREMONT LLC

Apparatus and method for middle shield connection in magnetic recording transducers

Spin transfer torque tunneling magnetoresistive device having a laminated free layer with perpendicular magnetic anisotropy

Method and system for providing a read transducer having soft and hard magnetic bias structures

YU CHENGTAO R

Laminated touchdown sensor for hard disk drives

Touchdown sensor having a more stable crystal structure for use in hard disk drives

CHEN LAURENCE L

Method and system for providing a read transducer having soft and hard magnetic bias structures

WESTERN DIGITAL TECHNOLOGIES INC

MAMR writer with low resistance MAMR stack

WESTERN DIGITAL (FREMONT) LLC

Spin transfer torque tunneling magnetoresistive device having a laminated free layer with perpendicular magnetic anisotropy

DING YUNFEI

Magnetic shielding in magnetic multilayer structures