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Milpitas, CA, United States of America

Headway Technologies, Incorporated

USPTO Granted Patents = 1,231

% Expired Patents = 27.8

EPO Patents = 37

Forward Citations = 11,663

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331 inventors (with patents filed for the assignee):

Yoshitaka Sasaki (337 out of 482 patents)

Hiroyuki Ito (212 out of 213 patents)

Min Li (191 out of 203 patents)

4. Shigeki Tanemura (168 out of 175 patents)

5. Hironori Araki (137 out of 138 patents)

6. Kunliang Zhang (123 out of 132 patents)

7. Cheng Tzong Horng (113 out of 167 patents)

8. Kochan Ju (111 out of 140 patents)

9. Moris Musa Dovek (104 out of 125 patents)

10. Cherng-Chyi Han (102 out of 102 patents)

11. Ru-Ying Tong (98 out of 176 patents)

12. Kazuki Sato (93 out of 130 patents)

13. Mao-Min Chen (82 out of 105 patents)

14. Yuhui Tang (78 out of 78 patents)

15. Atsushi Iijima (72 out of 108 patents)

Core Competencies:

Perpendicular Magnetic Recording

Spin Torque Oscillator

Heat-Assisted Magnetic Recording

Magnetic Tunnel Junction

Near Field Transducer

Thermally-Assisted Recording

Adaptive Bias Control

Reader Noise Reduction

Magnetic Anisotropy

Magnetic Flux Guiding

Spin Injection

Electroplating

1,231 patents: Sort by Forward Citations

1. 12770647 - Hybrid plasmonic bottom layer for increased near field transducer reliability (2026-10-20),

2. 12755756 - Write head designs with refill materials on a back edge of an assist device for improved write head reliability and performance (2026-10-06),

3. 12755755 - Hard disk drive and write heads having refilled structures at side edges of an assist device (2026-10-06),

4. 12738293 - Writer with patterned hot seed layer (2026-09-15),

5. 12731605 - Magnetic flux guiding device with spin torque oscillator (STO) film having negative spin polarization layers in assisted writing application (2026-09-08),

6. 12718839 - Magneto-resistive reader utilizing read shields to maintain reference layer magnetization (2026-08-25),

7. 12711985 - Heat Assisted Magnetic Recording Head with Slider and Laser Diode (2026-08-18),

8. 12706118 - Near field transducer with template layer for improved reliability (2026-08-11),

9. 12706113 - Perpendicular magnetic recording writer with tunable pole side bridge design (2026-08-11),

10. 12694894 - Pre-assisting microwave magnetic recording based on spin-hall nano-oscillators (2026-07-28),

11. 12658201 - Tapered magnetic main pole structure with variable peg gap for heat-assisted magnetic recording technology (2026-06-16),

12. 12603103 - Perpendicular magnetic recording head equipping a spin torque oscillator element with an electric current in side gaps (2026-04-14),

13. 12597436 - Pre-assisting microwave-assisted magnetic recording with spin-torque nano-oscillators (2026-04-07),

14. 12592253 - Tapered bi-layer near field transducer for heat-assisted magnetic recording write heads (2026-03-31),

15. 12550623 - Nitride diffusion barrier structure for spintronic applications (2026-02-10),

Company Overview

Headway Technologies, Incorporated, based in Milpitas, California, specializes in advanced magnetic recording technology. The company focuses on developing innovative solutions such as Perpendicular Magnetic Recording and Heat-Assisted Magnetic Recording, which enhance data storage capabilities. Its expertise extends to Spin Torque Oscillators and Magnetic Tunnel Junctions, contributing to the evolution of high-density data storage. Headway is committed to pushing the boundaries of magnetic recording technologies, ensuring improved performance and reliability in data storage applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

1,231 Patents

#5 in Milpitas, CA

#100 in California

#414 in US

#830 in the World

Milpitas, CA, United States of America

Headway Technologies, Incorporated

Forward Citations = 11,663

331 inventors:

Yoshitaka Sasaki (337 out of 482 patents)

Hiroyuki Ito (212 out of 213 patents)

Min Li (191 out of 203 patents)

4. Shigeki Tanemura (168 out of 175 patents)

5. Hironori Araki (137 out of 138 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Headway Technologies, Incorporated. Retrieved from https://idiyas.com/company/headway-technologies

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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