Soji Koide

This inventor holds 17 USPTO granted patents, primarily in Thin Film Magnetic Heads. Top assignees: Tdk Corporation, Sae Magnetics (h.k.) Limited. Active years: 2005-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Soji Koide. Retrieved from https://idiyas.com/inventor/soji-koide

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

Calculating rank

USPTO Granted Patents = 17

% Patents Active = 94.1

Average Co-Inventor Count = 5.3

ph-index = 8

Forward Citations = 155(Granted Patents)

Location History:

Chuo-ku, JP (2007)
Tokyo, JP (2005 - 2013)

Company Filing History:

Sae Magnetics (h.k.) Limited

patents

where one patent can have more than one assignee

Years Active: 2005-2013

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Areas of Expertise:

Thin Film Magnetic Head

Hard Disk Drive

Head Gimbal Assembly

Magnetic Recording

Testing Method

Heater Design

Magnetic Elements

Manufacturing Method

Head Slider

Lapping Device

Spin-Valve Film

Magnetic Disk Device

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8462467 - Thin film magnetic head including soft layer magnetically connected with shield (2013-06-11),

2. 8437106 - Thin film magnetic head including spin-valve film with free layer magnetically connected with shield (2013-05-07),

3. 8174793 - Thin film magnetic head and magnetic disk device and electronic component (2012-05-08),

4. 7872471 - Testing method of head element and magnetic recording and reproducing apparatus capable of head evaluating (2011-01-18),

5. 7623322 - Thin-film magnetic head with heater spaced further from medium facing surface than split in shield (2009-11-24),

6. 7583479 - Thin-film magnetic head with heater in overcoat multilayer, head gimbal assembly with thin-film magnetic head, and magnetic disk drive apparatus with head gimbal assembly (2009-09-01),

7. 7542236 - Head slider, head gimbal assembly, and hard disk dirve (2009-06-02),

8. 7384327 - Method for grinding a bar of thin film magnetic elements utilizing a plurality of resistive films (2008-06-10),

9. 7224553 - Thin-film magnetic head, head gimbal assembly, and hard disk drive incorporating a heater (2007-05-29),

10. 7203035 - Thin-film magnetic head having a sheet-shaped heater with a lead part connected in series with the heater and having a resistance lower than the heater (2007-04-10),

11. 7184246 - Thin-film magnetic head having heater member and bump for electrical connection of heater member (2007-02-27),

12. 7180707 - Thin-film magnetic head, head gimbal assembly, and hard disk drive (2007-02-20),

13. 7155808 - Method of making thin film magnetic head (2007-01-02),

14. 7113369 - Head slider, head gimbal assembly, and hard disk drive (2006-09-26),

15. 7102856 - Head slider and manufacturing method thereof (2006-09-05),

Title: Soji Koide: Innovator in Thin Film Magnetic Head Technology

Introduction

Soji Koide is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic technology, particularly in the development of thin film magnetic heads. With a total of 17 patents to his name, Koide's work has had a substantial impact on the industry.

Latest Patents

Koide's latest patents include innovative designs for thin film magnetic heads. One notable patent describes a thin film magnetic head that features a soft layer magnetically connected with a shield. This design incorporates a magneto resistance effect film, which has electrical resistance that varies in response to external magnetic fields. The head is equipped with a pair of shields that sandwich the MR film, along with an anisotropy providing layer that magnetizes the first shield in a desired direction. Additionally, side shields with soft magnetic layers are included to enhance performance.

Another significant patent involves a thin film magnetic head that includes a spin-valve film with a free layer magnetically connected to a shield. This design features a pinned layer with a fixed magnetization direction and a free layer with a variable magnetization direction. The MR film is complemented by a magnetic coupling layer that connects the first shield with the free layer, further advancing the technology in this field.

Career Highlights

Throughout his career, Soji Koide has worked with notable companies such as TDK Corporation and SAE Magnetics (H.K.) Limited. His experience in these organizations has allowed him to refine his expertise and contribute to groundbreaking advancements in magnetic technology.

Collaborations

Koide has collaborated with esteemed colleagues, including Nobuya Oyama and Norikazu Ota. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Soji Koide's contributions to the field of thin film magnetic heads exemplify his innovative spirit and technical expertise. His patents continue to influence the industry and pave the way for future advancements in magnetic technology.

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]