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For the Inventor, By the Inventor

Shiroyama, Japan

Masaaki Futamoto

This inventor holds 70 USPTO granted patents, primarily in Magnetic Recording Media (CPC class 4286). Top assignees: Hitachi, Ltd., Hitachi Global Storage Technologies Japan, Ltd., Hitachi Maxell, Limited. Active years: 1980-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Futamoto. Retrieved from https://idiyas.com/inventor/masaaki-futamoto

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

USPTO Granted Patents = 70

% Patents Active = 68.6

Average Co-Inventor Count = 5.9

ph-index = 18

Forward Citations = 919(Granted Patents)

Forward Citations (Not Self Cited) = 873(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Shiroyamacho, JP (1997)
  • Tukui-gun, JP (1998)
  • Tsukui-gun, JP (1998 - 2003)
  • Tsukui, JP (1980 - 2004)
  • Kanagawa, JP (1984 - 2007)
  • Kanagawa-ken, JP (1996 - 2007)
  • Shiroyama, JP (2002 - 2008)

Company Filing History:

goldMedal64 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal5 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
bronzeMedal5 out of 1,112 
 
Hitachi Maxell, Limited
 patents
4. 1 out of 52 
 
Hitachi Global Storage Technologies
 patents
where one patent can have more than one assignee

Years Active: 1980-2008

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Areas of Expertise:
Magnetic Recording
Perpendicular Recording
Magnetic Storage
Magnetic Head
Tunneling Effect
Magnetoresistance
Magnetic Medium
Magnetic Apparatus
Fluctuation Field
Reproducing Element
Magnetic Disk
Magnetic Thin Film
70 patents (USPTO):Explore Patents
1. 7399540 - Perpendicular magnetic recording media, magnetic recording apparatus (2008-07-15),
2. 7351445 - Magnetic recording media and method of forming them (2008-04-01),
3. 7348078 - Perpendicular magnetic recording medium and magnetic storage apparatus (2008-03-25),
4. 7159303 - Method for manufacturing magnetic head device (2007-01-09),
5. 7157162 - Magnetic recording medium and magnetic recording and reproducing apparatus (2007-01-02),
6. 7147941 - Perpendicular magnetic recording media, magnetic recording apparatus (2006-12-12),
7. 7138195 - Perpendicular magnetic recording media and magnetic storage (2006-11-21),
8. 7097924 - Magnetic recording media and method of forming them (2006-08-29),
9. 7054120 - Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect (2006-05-30),
10. 7026810 - Method for testing or recording servo signal on perpendicular magnetic recording media (2006-04-11),
11. 6926974 - Perpendicular magnetic recording medium and magnetic storage apparatus (2005-08-09),
12. 6894488 - Method for testing or recording servo signal on perpendicular magnetic recording media (2005-05-17),
13. 6852398 - Perpendicular-magnetic recording media and magnetic recording apparatus (2005-02-08),
14. 6846577 - Magnetic recording medium possessing a fluctuation field of not less than 30 Oe (2005-01-25),
15. 6770389 - Perpendicular magnetic recording medium and magnetic recording apparatus (2004-08-03),

As an AI assistant specialized in innovations, inventions, inventors, patent attorneys, assignees, and patents, I can provide you with an article about inventor Masaaki Futamoto.

Title: The Inventive Mind of Masaaki Futamoto

Introduction:

Masaaki Futamoto, a prolific inventor based in Shiroyama, Japan, has made significant contributions to the field of magnetic recording media. With an impressive portfolio of 70 patents, Futamoto is renowned for his expertise in high-density magnetic recording technology.

Latest Patents:

Futamoto's latest patents include advancements in perpendicular magnetic recording media and magnetic recording apparatus. By structuring the magnetic back film of a dual-layer perpendicular recording medium with functional separation and defined magnetization orientations, he has successfully reduced the frequency of noise occurrence, enhancing recording efficiency.

Career Highlights:

Throughout his career, Futamoto has worked with esteemed companies such as Hitachi Co., Ltd. and Hitachi Global Storage Technologies Japan, Ltd. His innovative solutions have propelled these organizations to the forefront of magnetic recording technology, shaping the industry landscape.

Collaborations:

Futamoto's collaborations with accomplished colleagues like Yukio Honda and Yoshiyuki Hirayama have led to groundbreaking developments in magnetic recording technology. Together, they have pushed the boundaries of high-density magnetic recording, revolutionizing the way data is stored and accessed.

Conclusion:

In conclusion, Masaaki Futamoto's inventive spirit and dedication to advancing magnetic recording technology have solidified his position as a key figure in the industry. His relentless pursuit of innovation continues to inspire future generations of inventors and researchers in the field of high-density magnetic storage.

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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