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For the Inventor, By the Inventor

Odawara, Japan

Masato Shiimoto

This inventor holds 53 USPTO granted patents and 6 published patent applications, primarily in Spintronic Devices. Top assignees: Hgst Netherlands, B.v., Western Digital Technologies, Inc., Hitachi, Ltd.. Active years: 2012-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masato Shiimoto. Retrieved from https://idiyas.com/inventor/masato-shiimoto

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

Calculating rank
USPTO Granted Patents = 53 

% Patents Active = 73.6

Average Co-Inventor Count = 3.9

ph-index = 17

Forward Citations = 730(Granted Patents)

Forward Citations (Not Self Cited) = 650(Dec 10, 2025)


Location History:

  • Odawara, JP (2012 - 2016)
  • Kanagawa, JP (2012 - 2016)
  • Hiratsuka, JP (2016)
  • Fujisawa, JP (2016 - 2021)

Company Filing History:

goldMedal28 out of 987 
 
Hgst Netherlands, B.v.
 patents
silverMedal11 out of 5,434 
 
Western Digital Technologies, Inc.
 patents
bronzeMedal10 out of 42,760 
 
Hitachi, Ltd.
 patents
4. 3 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
5. 1 out of 2 
 
Hsgt Netherlands B.v.
 patents

Years Active: 2012-2026

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Areas of Expertise:
Spintronic Device
Magnetic Write Head
Microwave-Assisted Recording
Spin Torque Oscillator
Magnetic Recording
High Saturation Magnetization
Dual FGL
MAMR Head
Magnetic Notch
Pole Erasure Suppression
Asymmetrical Reader
Electric Damage Protection
53 patents (USPTO):Explore Patents
1. 12700424 - Dual FGL and dual SPL spintronic device to reduce perpendicular field at writing location (2026-08-04),
2. 12620412 - Spintronic device comprising dual FGL and dual SPL to reduce perpendicular field at writing location (2026-05-05),
3. 12190920 - Spintronic device comprising dual FGL and dual SPL to reduce perpendicular field at writing location (2025-01-07),
4. 12190919 - Dual FGL and dual SPL spintronic device to reduce perpendicular field at writing location (2025-01-07),
5. 11011190 - Magnetic write head with write-field enhancement structure including a magnetic notch (2021-05-18),
6. 10811039 - Magnetic write head for providing spin-torque-assisted write field enhancement (2020-10-20),
7. 10546603 - Magnetic write head for providing spin-torque-assisted write field enhancement (2020-01-28),
8. 10366714 - Magnetic write head for providing spin-torque-assisted write field enhancement (2019-07-30),
9. 10283159 - Switching period control of microwave assisted magnetic recording for pole erasure suppression (2019-05-07),
10. 10020020 - Switching period control of microwave assisted magnetic recording for pole erasure suppression (2018-07-10),
11. 9799369 - Switching period control of microwave assisted magnetic recording for pole erasure suppression (2017-10-24),
12. 9406322 - Graded side shield gap reader (2016-08-02),
13. 9406316 - Asymmetric MAMR head with self-aligned spin torque oscillator along flare edge for shingled magnetic recording (2016-08-02),
14. 9406315 - AF-mode STO with negative Hk spin polarization layer (2016-08-02),
15. 9396744 - Two dimensional magnetic read head having asymmetrical secondary read elements (2016-07-19),

Title: Masato Shiimoto: Pioneering Inventor from Odawara

Introduction: Masato Shiimoto is a renowned inventor hailing from Odawara, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Masato Shiimoto holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his innovative spirit and forward-thinking approach.

Career Highlights: With over two decades of experience in the tech industry, Masato Shiimoto has worked with leading research institutions and universities to develop cutting-edge solutions that have revolutionized the way we interact with technology.

Collaborations: Throughout his career, Masato Shiimoto has collaborated with top companies in Japan and internationally, fostering a culture of innovation and knowledge sharing that has led to significant advancements in the field.

Conclusion: Masato Shiimoto's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a trailblazer in the world of technology, inspiring the next generation of inventors to push the boundaries of what is possible.

Profile summary based on public USPTO records.
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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