John T. CONTRERAS

Person

Palo Alto, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
DC and synchronized energy assisted perpendicular magnetic recordin...
- Patent number 12,347,467
- Issue date Jul 1, 2025
- Western Digital Technologies, Inc.
- Joey M. Poss
- G11 - INFORMATION STORAGE
Information Patent Grant
System controlled RF signal source architecture with transducer nea...
- Patent number 12,183,372
- Issue date Dec 31, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Alternating-bias signal resistance detection for resistive temperat...
- Patent number 12,140,485
- Issue date Nov 12, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Dark laser heating by positive pulse biasing in heat assisted magne...
- Patent number 12,125,509
- Issue date Oct 22, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Multiple-actuator HDD assembly utilizing multiple-preamp architectu...
- Patent number 12,100,422
- Issue date Sep 24, 2024
- Western Digital Technologies, Inc.
- Daniel Oh
- G11 - INFORMATION STORAGE
Information Patent Grant
Continuous dual path resistance detection for resistive temperature...
- Patent number 11,961,542
- Issue date Apr 16, 2024
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Alternating-bias signal resistance detection for resistive temperat...
- Patent number 11,874,182
- Issue date Jan 16, 2024
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Flexible printed circuit finger layout for low crosstalk
- Patent number 11,818,834
- Issue date Nov 14, 2023
- Western Digital Technologies, Inc.
- Masahiro Kishimoto
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Disk drive biasing two write assist elements using three terminal c...
- Patent number 11,615,804
- Issue date Mar 28, 2023
- Western Digital Technologies, Inc.
- Joey M. Poss
- G11 - INFORMATION STORAGE
Information Patent Grant
Spark gap electrostatic discharge (ESD) protection for memory cards
- Patent number 11,477,881
- Issue date Oct 18, 2022
- SanDisk Technologies LLC
- Albert Wallash
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Distributed grouped terminations for multiple memory integrated cir...
- Patent number 11,456,022
- Issue date Sep 27, 2022
- Western Digital Technologies, Inc.
- John Thomas Contreras
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Data storage device employing amplifier feedback for impedance matc...
- Patent number 11,361,786
- Issue date Jun 14, 2022
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor device with die-skipping wire bonds
- Patent number 11,362,063
- Issue date Jun 14, 2022
- Western Digital Technologies, Inc.
- Xinzhi Xing
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Active low-power termination
- Patent number 11,303,276
- Issue date Apr 12, 2022
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Printed circuit board compensation structure for high bandwidth and...
- Patent number 11,302,645
- Issue date Apr 12, 2022
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Data storage device transmitting configuration data to a preamp cir...
- Patent number 11,295,764
- Issue date Apr 5, 2022
- Western Digital Technologies, Inc.
- Jonas A. Goode
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage devices with integrated slider voltage potential control
- Patent number 11,276,424
- Issue date Mar 15, 2022
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage devices with integrated slider voltage potential control
- Patent number 11,087,784
- Issue date Aug 10, 2021
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device configured with manufacture PCB for concurrent...
- Patent number 10,950,265
- Issue date Mar 16, 2021
- Western Digital Technologies, Inc.
- Junzo Noda
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device comprising dual channel preamp circuit
- Patent number 10,896,695
- Issue date Jan 19, 2021
- Western Digital Technologies, Inc.
- Junzo Noda
- G11 - INFORMATION STORAGE
Information Patent Grant
High-bandwidth STO bias architecture with integrated slider voltage...
- Patent number 10,891,973
- Issue date Jan 12, 2021
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk drive with write gap conductive structure and dual indepe...
- Patent number 10,650,850
- Issue date May 12, 2020
- Western Digital Technologies, Inc.
- Sukumar Rajauria
- G11 - INFORMATION STORAGE
Information Patent Grant
Series resistance in transmission lines for die-to-die communication
- Patent number 10,643,676
- Issue date May 5, 2020
- Western Digital Technologies, Inc.
- Sayed Mobin
- G11 - INFORMATION STORAGE
Information Patent Grant
Dedicated termination dies for memory systems
- Patent number 10,637,533
- Issue date Apr 28, 2020
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High-bandwidth STO bias architecture with integrated slider voltage...
- Patent number 10,629,229
- Issue date Apr 21, 2020
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
HAMR thermal sensor with fast response time
- Patent number 10,564,053
- Issue date Feb 18, 2020
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Transmission line optimization for multi-die systems
- Patent number 10,468,073
- Issue date Nov 5, 2019
- SanDisk Technologies LLC
- John Thomas Contreras
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Active low-power termination
- Patent number 10,461,965
- Issue date Oct 29, 2019
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
High-bandwidth STO bias architecture with integrated slider voltage...
- Patent number 10,424,323
- Issue date Sep 24, 2019
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Compact broadband common-mode filter
- Patent number 10,411,670
- Issue date Sep 10, 2019
- Western Digital Technologies, Inc.
- Xinzhi Xing
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
TSV SEMICONDUCTOR DEVICE INCLUDING INDUCTIVE COMPENSATION LOOPS
- Publication number 20240213151
- Publication date Jun 27, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTIPLE-ACTUATOR HDD ASSEMBLY UTILIZING MULTIPLE-PREAMP ARCHITECTU...
- Publication number 20240212713
- Publication date Jun 27, 2024
- Western Digital Technologies, Inc.
- Daniel Oh
- G11 - INFORMATION STORAGE
Information Patent Application
SYSTEM CONTROLLED RF SIGNAL SOURCE ARCHITECTURE WITH TRANSDUCER NEA...
- Publication number 20240203449
- Publication date Jun 20, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
ALTERNATING-BIAS SIGNAL RESISTANCE DETECTION FOR RESISTIVE TEMPERAT...
- Publication number 20240175765
- Publication date May 30, 2024
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
NAND DIE WITH WIRE-BOND INDUCTIVE COMPENSATION FOR ALTERED BOND WIR...
- Publication number 20240145424
- Publication date May 2, 2024
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
DC AND SYNCHRONIZED ENERGY ASSISTED PERPENDICULAR MAGNETIC RECORDIN...
- Publication number 20240105217
- Publication date Mar 28, 2024
- Western Digital Technologies, Inc.
- Joey M. Poss
- G11 - INFORMATION STORAGE
Information Patent Application
Channel Circuit with Asynchronous Sampling from an Oversampled Anal...
- Publication number 20240097696
- Publication date Mar 21, 2024
- Western Digital Technologies, Inc.
- Richard Galbraith
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FLEXIBLE PRINTED CIRCUIT FINGER LAYOUT FOR LOW CROSSTALK
- Publication number 20240040688
- Publication date Feb 1, 2024
- Western Digital Technologies, Inc.
- Masahiro Kishimoto
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
ALTERNATING-BIAS SIGNAL RESISTANCE DETECTION FOR RESISTIVE TEMPERAT...
- Publication number 20240003750
- Publication date Jan 4, 2024
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
CONTINUOUS DUAL PATH RESISTANCE DETECTION FOR RESISTIVE TEMPERATURE...
- Publication number 20240005957
- Publication date Jan 4, 2024
- Western Digital Technologies, Inc.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
FLEXIBLE PRINTED CIRCUIT FINGER LAYOUT FOR LOW CROSSTALK
- Publication number 20220418092
- Publication date Dec 29, 2022
- Western Digital Technologies, Inc.
- Masahiro Kishimoto
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
DATA STORAGE DEVICE EMPLOYING AMPLIFIER FEEDBACK FOR IMPEDANCE MATC...
- Publication number 20220165299
- Publication date May 26, 2022
- Western Digital Technologies, Inc.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
Active Low-Power Termination
- Publication number 20220052688
- Publication date Feb 17, 2022
- Western Digital Technologies, Inc.
- John Thomas CONTRERAS
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PRINTED CIRCUIT BOARD COMPENSATION STRUCTURE FOR HIGH BANDWIDTH AND...
- Publication number 20210407915
- Publication date Dec 30, 2021
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISTRIBUTED GROUPED TERMINATIONS FOR MULTIPLE MEMORY INTEGRATED CIR...
- Publication number 20210407565
- Publication date Dec 30, 2021
- Western Digital Technologies, Inc.
- John Thomas Contreras
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DATA STORAGE DEVICES WITH INTEGRATED SLIDER VOLTAGE POTENTIAL CONTROL
- Publication number 20210327462
- Publication date Oct 21, 2021
- Western Digital Technologies, Inc.
- John CONTRERAS
- G11 - INFORMATION STORAGE
Information Patent Application
SPARK GAP ELECTROSTATIC DISCHARGE (ESD) PROTECTION FOR MEMORY CARDS
- Publication number 20200413531
- Publication date Dec 31, 2020
- SANDISK TECHNOLOGIES LLC
- Albert Wallash
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DATA STORAGE DEVICES WITH INTEGRATED SLIDER VOLTAGE POTENTIAL CONTROL
- Publication number 20200349969
- Publication date Nov 5, 2020
- Western Digital Technologies, Inc.
- John CONTRERAS
- G11 - INFORMATION STORAGE
Information Patent Application
HIGH-BANDWIDTH STO BIAS ARCHITECTURE WITH INTEGRATED SLIDER VOLTAGE...
- Publication number 20200211584
- Publication date Jul 2, 2020
- Western Digital Technologies, Inc.
- John CONTRERAS
- G11 - INFORMATION STORAGE
Information Patent Application
SERIES RESISTANCE IN TRANSMISSION LINES FOR DIE-TO-DIE COMMUNICATION
- Publication number 20200105318
- Publication date Apr 2, 2020
- Western Digital Technologies, Inc.
- Sayed Mobin
- G11 - INFORMATION STORAGE
Information Patent Application
DEDICATED TERMINATION DIES FOR MEMORY SYSTEMS
- Publication number 20200106478
- Publication date Apr 2, 2020
- Western Digital Technologies, Inc.
- John Thomas Contreras
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE WITH DIE-SKIPPING WIRE BONDS
- Publication number 20200098728
- Publication date Mar 26, 2020
- Western Digital Technologies, Inc.
- Xinzhi Xing
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INDUCTIVE COMPENSATION IN MEMORY SYSTEMS
- Publication number 20200065270
- Publication date Feb 27, 2020
- SANDISK TECHNOLOGIES LLC
- Md. Sayed Hossain Mobin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
HIGH-BANDWIDTH STO BIAS ARCHITECTURE WITH INTEGRATED SLIDER VOLTAGE...
- Publication number 20190362744
- Publication date Nov 28, 2019
- Western Digital Technologies, Inc.
- John CONTRERAS
- G11 - INFORMATION STORAGE
Information Patent Application
TRANSMISSION LINE OPTIMIZATION FOR MULTI-DIE SYSTEMS
- Publication number 20190206450
- Publication date Jul 4, 2019
- SanDisk Technologies LLC
- John Thomas Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
HAMR THERMAL SENSOR WITH FAST RESPONSE TIME
- Publication number 20190120705
- Publication date Apr 25, 2019
- Western Digital Technologies, Inc.
- John T. CONTRERAS
- G01 - MEASURING TESTING
Information Patent Application
SUSPENSION ADJACENT-CONDUCTORS DIFFERENTIAL-SIGNAL-COUPLING ATTENUA...
- Publication number 20190043531
- Publication date Feb 7, 2019
- Western Digital Technologies, Inc.
- John CONTRERAS
- G11 - INFORMATION STORAGE
Information Patent Application
COMPACT BROADBAND COMMON-MODE FILTER
- Publication number 20180376580
- Publication date Dec 27, 2018
- Western Digital Technologies, Inc.
- Xinzhi XING
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
SOLENOID FILTER BUILT INTO A PRINTED CIRCUIT BOARD
- Publication number 20180376583
- Publication date Dec 27, 2018
- Western Digital Technologies, Inc.
- Albert WALLASH
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
HAMR THERMAL SENSOR WITH FAST RESPONSE TIME
- Publication number 20170336271
- Publication date Nov 23, 2017
- HGST NETHERLANDS B.V.
- John T. CONTRERAS
- G01 - MEASURING TESTING

John T. CONTRERAS

Person

Patents Grantslast 30 patents

DC and synchronized energy assisted perpendicular magnetic recordin...

System controlled RF signal source architecture with transducer nea...

Alternating-bias signal resistance detection for resistive temperat...

Dark laser heating by positive pulse biasing in heat assisted magne...

Multiple-actuator HDD assembly utilizing multiple-preamp architectu...

Continuous dual path resistance detection for resistive temperature...

Alternating-bias signal resistance detection for resistive temperat...

Flexible printed circuit finger layout for low crosstalk

Disk drive biasing two write assist elements using three terminal c...

Spark gap electrostatic discharge (ESD) protection for memory cards

Distributed grouped terminations for multiple memory integrated cir...

Data storage device employing amplifier feedback for impedance matc...

Semiconductor device with die-skipping wire bonds

Active low-power termination

Printed circuit board compensation structure for high bandwidth and...

Data storage device transmitting configuration data to a preamp cir...

Data storage devices with integrated slider voltage potential control

Data storage devices with integrated slider voltage potential control

Data storage device configured with manufacture PCB for concurrent...

Data storage device comprising dual channel preamp circuit

High-bandwidth STO bias architecture with integrated slider voltage...

Hard disk drive with write gap conductive structure and dual indepe...

Series resistance in transmission lines for die-to-die communication

Dedicated termination dies for memory systems

High-bandwidth STO bias architecture with integrated slider voltage...

HAMR thermal sensor with fast response time

Transmission line optimization for multi-die systems

Active low-power termination

High-bandwidth STO bias architecture with integrated slider voltage...

Compact broadband common-mode filter

Patents Applicationslast 30 patents

TSV SEMICONDUCTOR DEVICE INCLUDING INDUCTIVE COMPENSATION LOOPS

MULTIPLE-ACTUATOR HDD ASSEMBLY UTILIZING MULTIPLE-PREAMP ARCHITECTU...

SYSTEM CONTROLLED RF SIGNAL SOURCE ARCHITECTURE WITH TRANSDUCER NEA...

ALTERNATING-BIAS SIGNAL RESISTANCE DETECTION FOR RESISTIVE TEMPERAT...

NAND DIE WITH WIRE-BOND INDUCTIVE COMPENSATION FOR ALTERED BOND WIR...

DC AND SYNCHRONIZED ENERGY ASSISTED PERPENDICULAR MAGNETIC RECORDIN...

Channel Circuit with Asynchronous Sampling from an Oversampled Anal...

FLEXIBLE PRINTED CIRCUIT FINGER LAYOUT FOR LOW CROSSTALK

ALTERNATING-BIAS SIGNAL RESISTANCE DETECTION FOR RESISTIVE TEMPERAT...

CONTINUOUS DUAL PATH RESISTANCE DETECTION FOR RESISTIVE TEMPERATURE...

FLEXIBLE PRINTED CIRCUIT FINGER LAYOUT FOR LOW CROSSTALK

DATA STORAGE DEVICE EMPLOYING AMPLIFIER FEEDBACK FOR IMPEDANCE MATC...

Active Low-Power Termination

PRINTED CIRCUIT BOARD COMPENSATION STRUCTURE FOR HIGH BANDWIDTH AND...

DISTRIBUTED GROUPED TERMINATIONS FOR MULTIPLE MEMORY INTEGRATED CIR...

DATA STORAGE DEVICES WITH INTEGRATED SLIDER VOLTAGE POTENTIAL CONTROL

SPARK GAP ELECTROSTATIC DISCHARGE (ESD) PROTECTION FOR MEMORY CARDS

DATA STORAGE DEVICES WITH INTEGRATED SLIDER VOLTAGE POTENTIAL CONTROL

HIGH-BANDWIDTH STO BIAS ARCHITECTURE WITH INTEGRATED SLIDER VOLTAGE...

SERIES RESISTANCE IN TRANSMISSION LINES FOR DIE-TO-DIE COMMUNICATION

DEDICATED TERMINATION DIES FOR MEMORY SYSTEMS

SEMICONDUCTOR DEVICE WITH DIE-SKIPPING WIRE BONDS

INDUCTIVE COMPENSATION IN MEMORY SYSTEMS

HIGH-BANDWIDTH STO BIAS ARCHITECTURE WITH INTEGRATED SLIDER VOLTAGE...

TRANSMISSION LINE OPTIMIZATION FOR MULTI-DIE SYSTEMS

HAMR THERMAL SENSOR WITH FAST RESPONSE TIME

SUSPENSION ADJACENT-CONDUCTORS DIFFERENTIAL-SIGNAL-COUPLING ATTENUA...

COMPACT BROADBAND COMMON-MODE FILTER

SOLENOID FILTER BUILT INTO A PRINTED CIRCUIT BOARD

HAMR THERMAL SENSOR WITH FAST RESPONSE TIME