Inventor

CONTRERAS JOHN

US47 patents

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

CONTRERAS JOHN

HGST Netherlands BV

Implementing spin torque oscillator power-on oscillation checker for microwave-assisted magnetic recording hard disk drives

Implementing spin torque oscillator power-on oscillation checker using ramped STO bias differentiator in microwave-assisted magnetic recording (MAMR) hard disk drives

Disk drive with preamplifier with isolation for multiple readers in a slider with a common return signal

Implementing noise based detection of spin torque oscillator power-on in microwave-assisted magnetic recording (MAMR) hard disk drives

DC-offset adjustment for balanced embedded contact sensor

Implementing write head device for contact detection and spacing sensing

Magnetic recording disk drive with write current overshoot amplitude (OSA) responsive to data transitions

Implementing dual partially independent thermal flyheight control (TFC) for hard disk drives

Disk drive with channel and preamp with dynamic write-current control for write head

Hard disk drive preamplifier with write driver having bypass current sources for compensation of write head magnetic asymmetry

Disk drive with preamplifier for multiple readers in a slider with a common return signal

Thermoelectric voltage-based differential contact sensor

Disk drive with filter compensation integrated in sliders for high-bandwidth read sensors

Grounding for a hard disk drive suspension tail

Media topography driven flying height modulation sensing using embedded contact sensor

Magnetic recording disk drive with multiple preamplifiers and common transmission line with impedance compensation

Integrated lead suspension (ILS) for two-dimensional magnetic recording (TDMR) disk drive

Suspension design with split substrate for improved interference signal immunity

Implementing asymmetric degauss control for write head for hard disk drives

Implementing calibration of cooling sensitivity of embedded contact sensor (ECS) signal using thermal fly-height control (TFC) actuations

Shielded flex cable for use in a disk drive

WESTERN DIGITAL TECH INC

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

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

Compact broadband common-mode filter

Solenoid filter built into a printed circuit board

Patterned ground structure filter designs with improved performance

Alternating-bias signal resistance detection for resistive temperature detectors in disk drives

Data storage devices with integrated slider voltage potential control

Continuous dual path resistance detection for resistive temperature detectors in disk drives

Flexible printed circuit finger trace layout for parallel servo operation

Flexible printed circuit finger layout for low crosstalk

Suspension adjacent-conductors differential-signal-coupling attenuation structures

CONTRERAS JOHN

Integrating control of slider bias potential, touch-down detection and fly-height determination in a HDD

Channel-source laser-pulsing system architecture for thermal-assisted recording

Preheat feature for thermally assisted recording

Motor mount for interference suppression in a hard disk drive

Read path compensation for SNR and signal transfer

HITACHI GLOBAL STORAGE TECH

Head-disk contact detection and work function difference determination

Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with impedance adjustment

Direct coupled wide-bandwidth front-end with smart bias control amplifier

Recording disk drive with reduced noise thermal flyheight control

HITACHI GLOBAL STORAGE TECH NL

Integrated slider bias control

Flex cable and method for lowering flex cable impedance

ELITE LEATHER COMPANY

Recliner

WALLASH ALBERT

Use of carbon nanotubes to form conductive gaskets deployed in sensitive environments