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Irvine, CA, United States of America

Western Digital Corporation

USPTO Granted Patents = 234

% Expired Patents = 1.3

Forward Citations = 13,137

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237 inventors (with patents filed for the assignee):

Kenneth W Ouyang (18 out of 18 patents)

Karl M Lofgren (14 out of 16 patents)

Daniel John Sokolov (14 out of 14 patents)

4. Richard William Hull (13 out of 21 patents)

5. Timothy G O'Shaughnessy (11 out of 11 patents)

6. Carl Bonke (11 out of 11 patents)

7. Jeffrey L Williams (10 out of 17 patents)

8. Raffi Codilian (10 out of 95 patents)

9. Robert L Cloke (9 out of 37 patents)

10. Gerald W Shearer (8 out of 8 patents)

11. Shawn E Casey (7 out of 24 patents)

12. Charles Royston Patton, Iii (7 out of 20 patents)

13. John Robert Edwards (7 out of 17 patents)

14. Nils E Larson (6 out of 26 patents)

15. Randall M Chung (6 out of 17 patents)

Core Competencies:

Disk Drive

Wear Leveling

Servo Optimization

Actuator Precision

Data Storage

Microactuator

Thermal Management

Data Integrity

Read/Write Head

SCSI Bus

Calibration Bursts

Memory Allocation

234 patents: Sort by Forward Citations

1. 9928203 - Object storage monitoring (2018-03-27),

2. 6859343 - Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature (2005-02-22),

3. 6850443 - Wear leveling techniques for flash EEPROM systems (2005-02-01),

4. 6771468 - Slider with high pitch-stiffness air bearing design (2004-08-03),

5. 6760196 - Microactuator with offsetting hinges and method for high-resolution positioning of magnetic read/write head (2004-07-06),

6. 6757140 - Electrostatic microelectromechanical (MEM) microactuator for precise read/write head positioning (2004-06-29),

7. 6724572 - Inductive transducer with recessed leading pole layer (2004-04-20),

8. 6281652 - Method of using two low-resolution DACS for converting high-resolution digital demands into analog output signals that monotonically drive an actuator motor in a disk drive (2001-08-28),

9. 6278568 - Disk drive employing read channel IC with common port for data and servo (2001-08-21),

10. 6271604 - Integrated computer module having a data integrity latch (2001-08-07),

11. 6263459 - On the fly write reallocation (2001-07-17),

12. 6262857 - Disk drive including a recording surface employing servo zones with banded data zones (2001-07-17),

13. 6256695 - Disk drive method of determining SCSI bus state information after a SCSI bus reset condition (2001-07-03),

14. 6249393 - Disk drive having a write condition detector for suspending write operations while a transducer flying height deviates from its operating flying height (2001-06-19),

15. 6246346 - Storage system employing high-rate code with constraint on run length between occurrences of an influential pattern (2001-06-12),

Company Overview

Western Digital Corporation, headquartered in Irvine, California, is a leading innovator in disk drive technology. The company specializes in the development and manufacturing of data storage solutions, focusing on advanced technologies such as wear leveling, servo optimization, and actuator precision. Western Digital's expertise extends to thermal management and data integrity, ensuring reliable performance in various applications. With a commitment to enhancing data storage capabilities, the company plays a crucial role in the evolving landscape of digital information management.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

234 Patents

#18 in Irvine, CA

#388 in California

#1,799 in US

#3,669 in the World

Irvine, CA, United States of America

Western Digital Corporation

Forward Citations = 13,137

237 inventors:

Kenneth W Ouyang (18 out of 18 patents)

Karl M Lofgren (14 out of 16 patents)

Daniel John Sokolov (14 out of 14 patents)

4. Richard William Hull (13 out of 21 patents)

5. Timothy G O'Shaughnessy (11 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Western Digital Corporation. Retrieved from https://idiyas.com/company/western-digital

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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