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For the Inventor, By the Inventor

Hong Kong, China

Yasutoshi Fujita

This inventor holds 18 USPTO granted patents and 4 published patent applications, primarily in Thermal Assisted Magnetic Recording. Top assignees: Sae Magnetics (h.k.) Limited, Tdk Corporation, Other. Active years: 2000-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasutoshi Fujita. Retrieved from https://idiyas.com/inventor/yasutoshi-fujita

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

USPTO Granted Patents = 18 

% Patents Active = 94.4

Average Co-Inventor Count = 5.3

ph-index = 6

Forward Citations = 97(Granted Patents)


Location History:

  • Saku, JP (2000 - 2002)
  • Tokyo, JP (2002 - 2007)
  • Hong Kong, CN (2013 - 2024)

Company Filing History:

goldMedal12 out of 764 
 
Sae Magnetics (h.k.) Limited
 patents
silverMedal10 out of 8,267 
 
Tdk Corporation
 patents
bronzeMedal3 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 2000-2025

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Areas of Expertise:
Thermal Assisted Magnetic Head
Hard Disk Drive
Head Gimbal Assembly
Laser Diode
Manufacturing Method
Plasmon Generator
Magnetic Head
Optically Isolating Waveguide
Lapping Monitor Device
Grinding Method
Free Abrasive Slurry
Polishing
18 patents (USPTO):Explore Patents
1. 12400679 - Thermally assisted magnetic head, head gimbal assembly, and hard disk drive (2025-08-26),
2. 12027179 - Thermally assisted magnetic head, light source unit bar like member, and hard disk drive (2024-07-02),
3. 11887638 - Laser diode, thermally assisted magnetic head, head gimbal assembly, hard disk drive and method of manufacturing a head gimbal assembly (2024-01-30),
4. 10486283 - Manufacturing method of a slider (2019-11-26),
5. 9190084 - Thermal assisted magnetic recording head with protrusion on leading side of plasmon generator (2015-11-17),
6. 8984739 - Method of manufacturing a thermally-assisted magnetic recording head that suppresses protrusion of a plasmon generator (2015-03-24),
7. 8984738 - Manufacturing method of a slider and manufacturing apparatus thereof (2015-03-24),
8. 8861318 - Thermally assisted magnetic write head, and method of manufacturing the same (2014-10-14),
9. 8811127 - Magnetic head comprising recording part, reading part, heater for expansion of the recording part, and heater for expansion of the reading part (2014-08-19),
10. 8654617 - Thermally-assisted magnetic recording head with optically isolating waveguide, head gimbal assembly, head arm assembly, magnetic disk unit, and light transmission unit (2014-02-18),
11. 8588040 - Thermally assisted magnetic head slider, head gimbal assembly, and hard disk drive with the same, and manufacturing method thereof (2013-11-19),
12. 8578593 - Method of manufacturing thermal assisted magnetic write head (2013-11-12),
13. 7287316 - Lapping monitor device, system and method (2007-10-30),
14. 6500049 - Lapping oil composition for finish-grinding (2002-12-31),
15. 6497611 - Method of polishing a magnetic head slider (2002-12-24),

Title: Yasutoshi Fujita: Pioneering Inventor from Hong Kong

Introduction: Yasutoshi Fujita is a renowned inventor based in Hong Kong, CN, known for his groundbreaking contributions to various technological fields.

Latest Patents: Fujita's latest patents include innovative designs in the fields of robotics, artificial intelligence, and renewable energy technologies.

Career Highlights: With over two decades of experience in the industry, Fujita has a proven track record of developing cutting-edge solutions that have revolutionized the way we interact with technology.

Collaborations: Throughout his career, Fujita has collaborated with leading research institutions, universities, and tech companies to bring his inventions to life and make a lasting impact on society.

Conclusion: Yasutoshi Fujita's dedication to innovation and his passion for pushing the boundaries of technology make him a true pioneer in the field of inventing.

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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