Inventor

Rajauria Sukumar

US39 patents

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

Rajauria Sukumar

WESTERN DIGITAL TECH INC

In-situ NFT pre-treatment to accumulate optically transparent material on NFT to improve reliability

Method and system for determining slider-disk contact in a magnetic recording disk drive with dual fly-height actuators

Heat treatment of NFT on heat-assisted magnetic recording device

Data storage device detecting abnormality with a write assist element based on slope of protrusion

Hard disk drive with write gap conductive structure and dual independent interface voltage control circuitry

Data storage device employing multi-mode sensing circuitry for multiple head sensor elements

Data storage device predicting failure of near field transducer based on slope of thermal gradient

HAMR media to assist optically transparent build-up on NFT to improve reliability

Data storage device detecting NFT contamination by measuring thermal gradient and magnetic write width

Heat-assisted magnetic recording device capable of providing negative electrical potential at NFT

Data storage device measuring air bearing resonant frequency to calibrate fly height touchdown power

Reducing laser diode temperature swings in heat-assisted magnetic recording (HAMR) using a slider-mounted heat sink

Temperature control of a laser diode by applying reverse bias in a data storage device configured for heat-assisted magnetic recording

Near-field transducer (NFT) designs for improved performance of heat-assisted magnetic recording (HAMR)

Managing laser diode cavity thermal transients in HAMR disk drives

Preheating laser diodes with reverse bias for HAMR disk drives

Heat treatment of NFT and surrounding material

Data timestamp and read counter for magnetic recording devices

Data storage device detecting write pole degradation for magnetic write head

In-situ NFT pre-treatment to accumulate optically transparent material on NFT to improve reliability

Using window underlayer structures to protect near field transducers on heat assisted magnetic recording heads

Touchdown detection and write-spacing setting in magnetic recording heads with protruding features

Dark laser heating by positive pulse biasing in heat assisted magnetic recording

Data storage device with detection and mitigation of non-nominal head heat dissipation

Electromagnetically-shielded near-field transducer thermal sensor for heat-assisted magnetic recording

Passive and active gas compensation techniques for data storage devices

Measuring laser diode temperature and predicting mode hops using laser diode resistance

Local extension of head overcoat with a near-field transducer extending toward the media-facing surface

Data storage device with laser write bias optimization using disk thermal-magnetic response mapping in heat-assisted magnetic recording

Full disk serpentine write path for tamper-proof disk drive

Thermal fly height calibration for data storage device

Devices and methods for metal organic framework (MOF) based oxygen replenishment in data storage devices

Measuring NFT protrusion in a heat assisted magnetic recording drive using burst writing and a constant laser diode temperature

HGST Netherlands BV

In-situ smear detection and mitigation in heat-assisted magnetic recording head-disk interface

Hard disk drive head-disk interface dithering

Tunable contact detection sensitivity to directly measure clearance of protrusions in magnetic recording heads

Monitoring and controlling the electrochemical wear at the head-disk interface

Implementing enhanced ultrafast touchdown measurement scheme using thermal and voltage actuation for hard disk drives

Using window underlayer structures to protect near field transducers on heat assisted magnetic recording heads