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Fremont, CA, United States of America

Western Digital (Fremont), Inc.

Calculating rank

USPTO Granted Patents = 728

% Expired Patents = 42.2

Forward Citations = 68,687

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478 inventors (with patents filed for the assignee):

Zhigang Bai (64 out of 140 patents)

Feng Q Liu (64 out of 70 patents)

Ming Jiang (52 out of 116 patents)

4. Yingjian Chen (52 out of 78 patents)

5. Qunwen Leng (47 out of 54 patents)

6. Ming Mao (44 out of 79 patents)

7. Jinqiu Zhang (42 out of 45 patents)

8. Yugang Wang (42 out of 50 patents)

9. Lei Wang (42 out of 100 patents)

10. Shaoping Li (40 out of 90 patents)

11. Kroum Stanimirov Stoev (37 out of 57 patents)

12. Hai Sun (35 out of 35 patents)

13. Kyusik Sin (35 out of 44 patents)

14. Tao Pan (33 out of 47 patents)

15. Hongxing Yuan (31 out of 32 patents)

Core Competencies:

Heat Assisted Magnetic Recording

Magnetic Reader

Multi-Sensor Arrays

Magnetic Transducers

Sub-Micron Alignment

AFC Shields

Write Apparatus

Dual Free Layer

Magnetic Features

Nonmagnetic Insertion Layer

Magnetic Recording

Photolithography

728 patents: Sort by Forward Citations

1. 10460751 - Stripe height lapping control structures for a multiple sensor array (2019-10-29),

2. 10381029 - Method and system for providing a HAMR writer including a multi-mode interference device (2019-08-13),

3. 10297276 - Systems and devices for acheiving high throughput attachment and sub-micron alignment of components (2019-05-21),

4. 10242700 - Magnetic reader having a nonmagnetic insertion layer for the pinning layer (2019-03-26),

5. 10121501 - Free layer magnetic reader that may have a reduced shield-to-shield spacing (2018-11-06),

6. 10121495 - Magnetic recording write apparatus having a stepped conformal trailing shield (2018-11-06),

7. 10115419 - Method for AFC shields for multiple sensor magnetic transducers and magnetic transducers having multiple sensors and AFC shields (2018-10-30),

8. 10115416 - Magnetic recording write apparatus having a pole having an aspect ratio greater than one and an auxiliary pole (2018-10-30),

9. 10106885 - Heat assisted magnetic recording head having near-field transducer with a sloped nose (2018-10-23),

10. 10074387 - Method and system for providing a read transducer having symmetric antiferromagnetically coupled shields (2018-09-11),

11. 10068601 - Free layer only magnetic reader that may have a reduced shield-to-shield spacing and a multilayer side bias (2018-09-04),

12. 10037773 - Heat assisted magnetic recording writer having integrated polarization rotation waveguides (2018-07-31),

13. 10037770 - Method for providing a magnetic recording write apparatus having a seamless pole (2018-07-31),

14. 10008222 - Stripe height lapping control structures for a multiple sensor array (2018-06-26),

15. 10008219 - Recording read heads with a multi-layer AFM layer methods and apparatuses (2018-06-26),

Company Overview

Western Digital (Fremont), Inc. is a prominent player in the field of magnetic recording technology, specializing in advanced storage solutions. The company focuses on innovative technologies such as Heat Assisted Magnetic Recording and magnetic transducers, which enhance data storage density and performance. Its research encompasses multi-sensor arrays and sub-micron alignment techniques, contributing to the development of high-efficiency magnetic readers and write apparatus. Based in Fremont, California, Western Digital continues to drive advancements in data storage technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

728 Patents

#4 in Fremont, CA

#161 in California

#693 in US

#1,371 in the World

Fremont, CA, United States of America

Western Digital (Fremont), Inc.

Forward Citations = 68,687

478 inventors:

Zhigang Bai (64 out of 140 patents)

Feng Q Liu (64 out of 70 patents)

Ming Jiang (52 out of 116 patents)

4. Yingjian Chen (52 out of 78 patents)

5. Qunwen Leng (47 out of 54 patents)

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

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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